What situation could the graph represent?
a. total rainfall during a rainy day
b. temperature as the weather changes from rainy to snowy
c. speed of a car starting from a stop sign and then approaching a stoplight
d. riding your bike slowly up a steep hill and then quickly down the other side
Answers
Answer:
b
Step-by-step explanation:
It can only be b because the graph is steadily decreasing (negative slope). if it's raining, the temperature is above freezing, and then the rain would turn to snow if the temperature dropped below freezing. So that matches the graph.
For a, total rainfall in a day, the total would keep going up, so it would have a positive slope.
For c, the speed of the car would be at 0 at the beginning when in's at the stop sign, and the graph is starting out well above 0.
For d, the graph would have to go up then down to represent the hill.
This is because it is the most suitable option than other graphs. Let's verify all options.
Option A => This does not do anything with the graph.Option B => This is the most reasonable option because it states that the weather changes from rainy to snowy. As the graph decreases, the temperature changes.Option C => This graph is halfway correct, but halfway incorrect. This is because if the speed of the car increases, the graph should increase. However, this graph shows the line decreasing. Hence, this does not do anything of the graph.Option D => This graph is halfway correct, but halfway incorrect. This is because if the speed of the bike increases, the graph should increase. However, this graph shows the line decreasing. Hence, this does not do anything of the graph.Related Questions
Solve the system of equations.
Answers
Answer:
C. (-4, 11) and (2, -1)Step-by-step explanation:
\(x^2-5=-2x+3\\\\x^2+2x-8=0\\\\a=1\,,\ b=2\,,\ c=-8\\\\x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\x=\dfrac{-2\pm\sqrt{2^2-4\cdot1\cdot(-8)}}{2\cdot1}=\dfrac{-2\pm\sqrt{4+32}}{2}=\dfrac{-2\pm\sqrt{36}}{2}=\dfrac{-2\pm6}{2}\\\\x_1=\dfrac{-2-6}2=\dfrac{-8}2=-4\\\\y_1=-2x_1+3=-2(-4)+3=8+3=11\\\\(-4\,,\ 11)\\\\x_2=\dfrac{-2+6}{2}=\dfrac{4}2=2\\\\y_2=-2x_2+3=-2\cdot2+3=-4+3=-1\\\\(2\,,\ -1)\)
Blurry picture but i really need this answered this test is worth more then half my grade.
Answers
Answer:
These are the coordinate pairs: (0,0), (2,4), (3,6), (6,12)
Step-by-step explanation:
since y=2x, you just multiply every value for x by 2, so for the x values 0, 2, 3, and 6, you would get 0, 4, 6, and 12, respectively.
With what instrument could the predictive validity of a metric scale (a set of questions) best be determined?A. Cronbach's alphaB. A correlation-coefficient C. Fishers r-to-z test.D. With none of the above mentioned instruments
Answers
The best instrument to determine the predictive validity of a metric scale would be a correlation-coefficient.
This measure assesses the strength of the relationship between two variables, in this case, the metric scale scores and the predicted outcome. A high correlation would indicate that the metric scale is a good predictor of the outcome, whereas a low correlation would indicate that the metric scale is not a reliable predictor.
Cronbach's alpha is a measure of internal consistency and would not be appropriate for determining predictive validity. Fisher's r-to-z test is used to compare the strength of two correlations and is not necessary in this scenario. Therefore, the answer is B, a correlation-coefficient.
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HELP ME PLEASE I WILL GIVE BRAINLIEST!
Answers
Answer:
Step-by-step explanation:
Its D
Task: 4 2/3 yards = ? feet
whats the rule
Answers
Answer:
4 2/3 yards = 14 feet
Step-by-step explanation:
1 yard = 3 feet
Which set represents the same relation as the table below?
x
f(x)
0
5
4
2
6
9
9
10
Answers
Answer:
its A
Step-by-step explanation:
ur welcome
50 POINTS!!!!!!!
please help
Let f (x) = x2 +1.
Let g(x) = (x + 2)2 +1.
Which statement describes the graph of g(x) with respect to the graph of f(x)?
It is translated left 2 units.
It is translated right 2 units.
It is compressed vertically by a factor of 2.
It is compressed horizontally by a factor of 2.
Answers
Answer:
For this transition of equations, the graph of g(x) will be translated left 2 units with respect to the graph of f(x), so your answer choice will be A.
Step-by-step explanation:
In this equation, g(x) is changed by adding 2 and closing part of the equation in parenthases, this results in the translation 2 units left, which can be proven by a graph and my answer.
Answer:
A.
Step-by-step explanation:
test confirmed
Each row contains the degree measures of two supplementary angles. Complete the table.
the measure of an angle measure of its supplement
80°
°
25°
°
119°
°
x
°
(From Unit 7, Lesson 2)
Answers
Answer:
Step-by-step explanation:the answer will be 100
Interest on $5.255 at 12% for 30 days (use ordinary interest) is: Multiple Choice:
a. $52.55 b. $5,307.55 c. $5.26 d. $5,260.26
Answers
The interest on $5.255 at 12% for 30 days using ordinary interest can be calculated using the formula:I = PRT,Where I is the interest, P is the principal amount, R is the rate of interest, and T is the time period.
Here, P = $5.255, R = 12% = 0.12 (as a decimal), and T = 30/365 = 0.08219 (in years, as the time is given in days).
So,
I = 5.255 x 0.12 x 0.08219 = $0.0518
Rounding to two decimal places, the interest on $5.255 at 12% for 30 days using ordinary interest is $5.26. Therefore, the correct answer is option (c).
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can anyone tell me how 1164÷8 = 145.5? I don't get it
Answers
Step-by-step explanation:
1160 divided by 8 is 145
so 1164 tecnically can't be divided by 8 normally so it comes in decimal form .
Answer:
1160 divided by 8 is 145
Step-by-step explanation:
but yah
When his Lexus lost control and rolled into his garage, David was happy he had full coverage on his home and automobile. The car is a total loss as well as the garage and the other car, RAV4, in the garage. What did he get from each policy
Answers
Therefore, an automobile insurance policy can provide him with financial protection for the total loss of his Lexus and the RAV4 in the garage
David's full coverage policies for his home and automobile should provide him with financial protection for the damages caused by the accident. From his home insurance policy, he may be able to receive compensation for the damage to his garage. And from his automobile insurance policy, he should be able to receive compensation for the total loss of his Lexus and the RAV4 that was also in the garage.
With full coverage on his home and automobile, David can expect to receive financial compensation for the damages caused by the accident. From his home insurance policy, he can get compensation for the garage damage, while his automobile insurance policy can provide him with financial protection for the total loss of his Lexus and the RAV4 in the garage.
Therefore, an automobile insurance policy can provide him with financial protection for the total loss of his Lexus and the RAV4 in the garage.
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Mary made 1/4 of a batch of cookies in 1/10 of an hour. How many batches
of cookies can she make in one hour?
Answers
Answer:
2.5 batches of cookies.
Step-by-step explanation:
1/4 of a batch is .25 and she can make that in 1/10 of an hr.
There are 6 batches she can make in 1 hr. .10*60=6
Then you would take the size of batch .25 and multiply it by the batches that can be made in an HR (6).
.25*6=2.5
2. How can you tell if a number is even or odd?
A. Look at the ones place.
B. Look at the tens place.
C. Look at the hundreds place.
D. Add o to the number.
Answers
Answer:
A.
bc if you have the answer 16 you look at 6 and see that 6 is a even number so the whole thing's even lol
Answer:
I think the answer is A
Step-by-step explanation
In 2015, the U.S. population was abõut 321 million. That number was
9.2 times greater than Canada's population. What was Canada's
population in 2015, rounded to the nearest million?
Answers
Answer:34.8 Million
Step-by-step explanation:
In a particular game, a fair die is tossed. If the number of spots showing is either four or five, you win $1. If the number of spots showing is six, you win $4. And if the number of spots showing is one, two, or three, you win nothing. You are going to play the game twice. The probability that you win at least $1 both times is
Answers
Answer:
The probability that you win at least $1 both times is 0.25 = 25%.
Step-by-step explanation:
For each game, there are only two possible outcomes. Either you win at least $1, or you do not. Games are independent. This means that the binomial probability distribution is used to solve this question.
Binomial probability distribution
The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.
\(P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}\)
In which \(C_{n,x}\) is the number of different combinations of x objects from a set of n elements, given by the following formula.
\(C_{n,x} = \frac{n!}{x!(n-x)!}\)
And p is the probability of X happening.
Probability of winning at least $1 on a single game:
The die has 6 sides.
If it lands on 4, 5 or 6(either of the three sides), you win at least $1. So
\(p = \frac{1}{2} = 0.5\)
You are going to play the game twice.
This means that \(n = 2\)
The probability that you win at least $1 both times is
This is P(X = 2).
\(P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}\)
\(P(X = 2) = C_{2,2}.(0.5)^{2}.(0.5)^{2} = 0.25\)
The probability that you win at least $1 both times is 0.25 = 25%.
The probability that you win at least $ 1 both times is 25%.
Since in a particular game, a fair die is tossed, and if the number of spots showing is either four or five, you win $ 1, while if the number of spots showing is six, you win $ 4, and if the number of spots showing is one, two, or three, you win nothing, and you are going to play the game twice, to determine the probability that you win at least $ 1 both times the following calculation must be performed:
2/6 = 1 1/6 = 4 3/6 = 0 3/6 x 3/6 = X 0.25 = X
Therefore, the probability that you win at least $ 1 both times is 25%.
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Tina will use more than 1/2 cup but less than 3/4 cup of flour for a recipe. What benchmark fraction of a cup does Tina use?
Answers
The benchmark fraction that Tina will use is 5/8 of a cup. This means that Tina will use a little more than half a cup but less than three-quarters of a cup of flour in her recipe.
A benchmark fraction is a commonly used fraction that can be used as a reference point when estimating or comparing other fractions. In this case, we are looking for a benchmark fraction that is close to the amount of flour that Tina will use, which is between 1/2 and 3/4 cup.
The two benchmark fractions we can use for this situation are 1/2 and 3/4. We know that Tina will use more than 1/2 cup but less than 3/4 cup, so we can narrow down the benchmark fractions to a value between 1/2 and 3/4.
To find the benchmark fraction that is closer to 3/4, we can take the average of 1/2 and 3/4. To do this, we add the two fractions together and divide by 2:
(1/2 + 3/4) / 2 = (2/4 + 3/4) / 2 = 5/8
So, Tina will use the standard fraction of 5/8 of a cup as her reference. The amount of flour Tina will use in her recipe is therefore slightly more than half a cup but less than three-quarters of a cup.
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in pascal's triangle, each entry is the sum of the two entries above it. in which row of pascal's triangle do three consecutive entries occur that are in the ratio 3:4:5?
Answers
The three consecutive entries in Pascal's Triangle that are in the ratio 3:4:5 occur in the 14th row.
The ratio 3:4:5 can be expressed as 3x, 4x, and 5x, where x is a constant. Using this ratio, we can find the values of the entries in the 14th row of Pascal's Triangle.
Starting from the left, the entries in the 14th row are 1, 13, 78, 286, 715, 1287, 1716, 1716, 1287, 715, 286, 78, 13, and 1.
We can see that the ratio of the 5th, 6th, and 7th entries (715, 1287, and 1716) is 3:4:5. Therefore, the answer is the 14th row.
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Question 20 O Mark this question Researchers want to test the effects of a new weight loss program. They believe that gender is a significant factor. The participants are divided by gender. Then, within each group, participants are randomly assigned to either the treatment or control group. Which of the following would be the most effective to test the effects of the new weight loss program? O Alongitudinal observational study O A matched-pair design experiment O A randomized block design experiment O A completely randomized design experiment
Answers
The most effective design to test the effects of the new weight loss program would be a randomized block design experiment.
A randomized block design experiment would be the most effective in this scenario because it allows for the control of potential confounding variables, such as gender, while also incorporating randomization.
1. Gender Division: The researchers first divide the participants into groups based on gender. This ensures that there is a balanced representation of both males and females in the study.
2. Random Assignment: Within each gender group, participants are randomly assigned to either the treatment group or the control group. Random assignment helps minimize any systematic differences between the groups, ensuring that any observed effects can be attributed to the weight loss program rather than other factors.
3. Blocking: Gender is considered a blocking factor in this design. By blocking, the researchers ensure that each treatment group and control group includes an equal number of males and females. This helps control for any potential differences between genders that could influence the outcome.
4. Control Group: The control group serves as a baseline comparison for the treatment group. Participants in the control group do not receive the weight loss program but instead receive a placebo or standard care. This allows for a comparison of the effects between the treatment and control groups.
5. Data Analysis: The data collected from this design can be analyzed using appropriate statistical tests, such as t-tests or analysis of variance (ANOVA), to determine if the weight loss program has a significant effect on the outcome variable.
Overall, a randomized block design experiment is the most effective approach in this scenario as it incorporates randomization, controls for potential confounding variables (gender), and allows for a comparison between treatment and control groups.
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3. Edward the Elf sells specialty elf shoes for $35 per pair. He has to pay $14.99 for the materials
to make one pair of shoes. How much money does he make from each pair of shoes after
he pays himself back for the materials?
Answers
edward makes $20.01 back from each pair of shoes he makes
Step-by-step explanation:
$35-$14.99=$20.01
El equipo de béisbol de los Gatos Salvajes de Ludlow, un equipo de las ligas menores de la organización de los Indios de Cleveland, juega 70% de sus partidos por la noche y 30% de día. El equipo gana 50% de los juegos nocturnos y 90% de los diurnos. De acuerdo con el periódico de hoy, ganaron el día de ayer. ¿Cuál es la probabilidad de que el partido se haya jugado de noche?
Answers
Answer:
0.5645
Step-by-step explanation:
De la pregunta anterior, se nos dan los siguientes valores para el equipo de Ludlow
Probabilidad de jugar de noche = 70% = 0.7
Probabilidad de ganar en la noche = 50% = 0.5
Probabilidad de jugar durante el día = 30% = 0.3
Probabilidad de ganar durante el día = 90% = 0.9
Probabilidad de que cuando ganaron ayer, el juego se jugó por la noche =
(Probabilidad de jugar de noche × Probabilidad de ganar de noche) ÷ [(Probabilidad de jugar de noche × Probabilidad de ganar de noche) + (Probabilidad de jugar de día × Probabilidad de ganar de día)]
Probabilidad de que cuando ganaron ayer, el juego se jugó de noche = (0.5 × 0.7) ÷ (0.5 × 0.7) + (0.9 × 0.3)
= 0.35 ÷ 0.35 + 0.27
= 0.35 ÷ 0.62
= 0.5645
La probabilidad de que el partido se haya jugado de noche = 0.5645
Which is the best estimate for the cost of each crayon?
96 crayons whols thing for 10.56
Answers
A group of veterinarians at a major veterinary hospital was interested in investigating a possible link between enteroliths, stones that form in the colon of horses, and diet. They decided to conduct a survey of feeding practices of horses admitted to the veterinary hospital. To obtain a simple random sample they used a computer to generate four-digit ID numbers for all horses. They used random digit tables to select the horses. Which is a step in selecting a random sample by this procedure?
1. Pick a random starting point in the table and read four digits.
2. Read four digits across a line and, if the four digits correspond to a horse ID, select the animal.
3. Discard any sequence that does not correspond to a horse ID and move to the next four digits.
4. All of the answer choices are correct.
Answers
1. Pick a random starting point in the table and read four digits.
This is the step in selecting a random sample by this procedure
What is sample?
In statistics, a sample refers to a group of individuals, objects, or events that are selected from a larger population to represent that population. Sampling is the process of selecting a subset of individuals or items from a larger population in order to infer something about the whole population.
The step in selecting a random sample by the procedure described in the scenario is step 1: Pick a random starting point in the table and read four digits. This step ensures that the selection of horses is entirely random, with each horse having an equal chance of being chosen. By starting at a random point in the table and selecting the first four digits, the veterinarians are eliminating any possible bias in the selection process. The subsequent steps involve using the selected four digits to determine if they correspond to a horse ID, discarding any sequences that do not match, and repeating the process until the desired sample size is reached.
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A set of laptop prices are normally distributed with a mean of 750750750 dollars and a standard deviation of 606060 dollars. What proportion of laptop prices are between 624624624 dollars and 768768768 dollars?.
Answers
The proportion of the laptops is equal to 0.6 with the price range between 624 dollars to 768 dollars for the given mean and standard deviation.
As given in the question,
Given condition:
Price of of given laptops set are normally distributed:
Mean 'μ' is equal to 750 dollars
Standard deviation 'σ' is 60 dollars
let 'X' represents the price of laptops
Range of price is given by:
624 < X < 768
= (624 - μ)/σ < (X - μ)/σ < (768 - μ)/σ
= (624 - 750)/60 < (X - μ)/σ < (768 - 750)/60
= -126 /60 < (X - μ)/σ < 18 /60
= -2.1 < Z < 0.3
From the table , value of z-score is equal to
z-score for -2.1 = 0.01786
z-score for 0.3 = 0.6179
Required proportion is equal to
0.6179 - 0.01786
= 0.6179 - 0.0179
= 0.6
Therefore, the proportion of laptops with the price between 624 and 768 is equal to 0.6.
The complete question is :
A set of laptop prices are normally distributed with a mean of 750 dollars and a standard deviation of 60dollars.
What proportion of laptop prices are between 624 dollars and 768 dollars?!
You may round your answer to four decimal places.
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Worth 60 points for a rapid reply- find the area of each regular polygon. Answers are rounded to the nearest whole number.
Answers
The area of the regular polygons with 12 sides(dodecagon) and 5 sides (pentagon) are 389.06 in² and 19.87 in² respectively.
How to calculate for the area of the polygonArea of regular polygon = 1/2 × apothem × perimeter
perimeter = (s)side length of octagon × (n)number of side.
apothem = s/[2tan(180/n)].
11 = s/[2tan(180/12)]
s = 11 × 2tan15
s = 5.8949
perimeter = 5.8949 × 12 = 70.7388
Area of dodecagon = 1/2 × 11 × 70.7388
Area of dodecagon = 389.0634 in²
Area of pentagon = 1/2 × 5.23 × 7.6
Area of pentagon = 19.874 in²
Therefore, the area of the regular polygons with 12 sides(dodecagon) and 5 sides (pentagon) are 389.06 in² and 19.87 in² respectively.
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You are considering purchasing a consol that promises annual payments of $4. a. If the current interest rate is 3 percent, what is the price of the consol? Instructions: Round your answer to the nearest penny (2 decimal places). The price of the consol is $ b. You are concerned that the interest rate may rise to 4 percent. Compute the percentage change in the price of the consol and the percentage change in the interest rate. Compare them. Instructions: Round your answer for dollar amounts to the nearest penny (2 decimal places ) and answers for percentages to the nearest tenth (1 decimal place) The new price of the consol would be $ The price of the consol falls by 7% and the interest rises by 7% c. Your investment horizon is one year. You purchase the consol when the interest rate is 5 percent and sell it a year later, following a rise in the interest rate to 6 percent. What is your holding period return? Instructions: Round your answer to the nearest tenth (1 decimal place) Your holding period return is %
Answers
a. The price of the consol is approximately $133.33.
b. The new price of the consol would be $100. The price of the consol falls by 24.99% and the interest rate rises by 1%.
c. Your holding period return is approximately -49.99%.
a. The price of the consol can be calculated using the formula for the present value of a perpetuity:
Price = Annual Payment / Interest Rate
In this case, the annual payment is $4 and the interest rate is 3%. Substituting these values into the formula:
Price = $4 / 0.03 ≈ $133.33
Therefore, the price of the consol is approximately $133.33.
b. To calculate the new price of the consol if the interest rate rises to 4%, we use the same formula:
New Price = Annual Payment / New Interest Rate
Substituting the values, we get:
New Price = $4 / 0.04 = $100
The percentage change in the price of the consol can be calculated using the formula:
Percentage Change = (New Price - Old Price) / Old Price * 100
Substituting the values, we have:
Percentage Change in Price = ($100 - $133.33) / $133.33 * 100 ≈ -24.99%
The percentage change in the interest rate is simply the difference between the old and new interest rates:
Percentage Change in Interest Rate = (4% - 3%) = 1%
Comparing the two percentages, we can see that the price of the consol falls by approximately 24.99%, while the interest rate rises by 1%.
c. The holding period return can be calculated using the formula:
Holding Period Return = (Ending Value - Initial Value) / Initial Value * 100
The initial value is the purchase price of the consol, which is $133.33, and the ending value is the price of the consol after one year with an interest rate of 6%. Using the formula for the present value of a perpetuity, we can calculate the ending value:
Ending Value = Annual Payment / Interest Rate = $4 / 0.06 = $66.67
Substituting the values into the holding period return formula:
Holding Period Return = ($66.67 - $133.33) / $133.33 * 100 ≈ -49.99%
Therefore, the holding period return is approximately -49.99%.
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Which of the following are in correct order from greatest to least? startfraction pi over 2 endfraction, 330°, startfraction 5 pi over 3 endfraction, startfraction 7 pi over 6 endfraction, startfraction 2 pi over 3 endfraction startfraction 5 pi over 3 endfraction, startfraction 7 pi over 6 endfraction, startfraction 2 pi over 3 endfraction, startfraction pi over 2 endfraction , 330° startfraction pi over 2 endfraction, startfraction 2 pi over 3 endfraction, startfraction 7 pi over 6 endfraction, startfraction 5 pi over 3 endfraction, 330° 330°, startfraction 5 pi over 3 endfraction, startfraction 7 pi over 6 endfraction, startfraction 2 pi over 3 endfraction, startfraction pi over 2 endfraction
Answers
The angles are in correct order greatest to least is 330°, 5π/3, 7π/6, 2π/3, π/2.
What is a reference angle?A reference angle means the measure of the smallest, positive, acute angle that is formed by the terminal side of the angle. Therefore, positive reference angles possess terminal sides in the first quadrant.
Lets convert all the values into degrees
330° = 330°
π/2 = 180/2 = 90°
5π/3 = 300°
7π/6 = 210°
2π/3 = 120°
Arrange them from greatest to lowest.
330°, 300°, 210°, 120°, 90°
or
330°, 5π/3, 7π/6, 2π/3, π/2
Hence, the angles are in correct order greatest to least is 330°, 5π/3, 7π/6, 2π/3, π/2.
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Answer:
d
Step-by-step explanation:
thats what the guy above me said
An employer offers a retirement program in which 7.7% of a worker's salary is deducted from their pay and deposited into an investment fund. the company then adds an additional 9% of the worker's salary to the fund. how much would an employee have deposited into their fund in the first year if their starting salary is 45,000?
Answers
According to the given statement the total deposited into the employee's fund in the first year would be $7,515.
To calculate how much would be deposited into the employee's fund in the first year, we need to add the amount deducted from the worker's salary (7.7%) and the additional contribution made by the company (9%).
Step 1:
Calculate the amount deducted from the worker's salary:
7.7% of the worker's salary = (7.7/100) * 45,000
Step 2:
Calculate the additional contribution made by the company:
9% of the worker's salary = (9/100) * 45,000
Step 3:
Add the two amounts to find the total deposited into the fund:
Total deposited into the fund = Amount deducted from the worker's salary + Additional contribution made by the company
In the first year, an employee with a starting salary of $45,000 would have $3,465 deducted from their pay and deposited into their retirement fund.
Additionally, the company would contribute $4,050 to the fund.
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Oliver has a points card for a movie theater.
He receives 50 rewards points just for signing up.
He earns 2.5 points for each visit to the movie theater.
He needs 75 points for a free movie ticket.
How many visits must Oliver make to earn a free movie ticket?
Answers
Answer:
Ten times.
Step-by-step explanation:
If you add 2.5 ten times to 50, you will get 75. Therefore, Oliver will need to visit the theater 10 times to get 75 points.
Answer:
10
Step-by-step explanation:
Is 19 is a prime number or not?
Answers
The number 19 have only two factors. They are 1 and 19. So it is a prime number. The statement is true.
Prime numbers are the numbers having only two factors, 1 and the number itself. There are some conditions that should be satisfied if they are counted as prime numbers.
It must be greater than 1.
It must be a natural number, not a decimal fraction or negative number.
It must have only two factors.
It must not be a product of any two numbers other than 1 and the number.
So a number which is not divisible by any other number than 1, can be called a prime number. All other numbers are composite numbers.
So 19 is not divisible by any other numbers. So it is a prime number.
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A teacher gave a 25 question multiple choice test. After scoring the tests, she computed a mean and standard deviation of the scores. The standard deviation was 0. Based on this information........ (choose the correct choice) None of the above. she must have made a mistake. about half the scores were above the mean. all the students had the same score.
Answers
By applying standard deviation concept, it can be concluded that all the students had the same score.
The mean is the average of all the scores. It is calculated by adding up all the scores and dividing them by the number of scores.
The standard deviation is a measure of how spread out the scores are. It is calculated by finding the difference between each score and the mean, squaring those differences, finding the average of those squared differences, and then taking the square root of that average.
If all the scores are the same, then the difference between each score and the mean will be 0. This means that the standard deviation will also be 0. Therefore, the correct answer is "all the students had the same score."
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