HELP!
- Your work solving the inequality
- The solution in set notation
- The solution in interval notation
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Picture below answers your question.
Related Questions
Answer choices for each are in red equation of lines best fit
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Based on the correlation coefficient from the technology data given, the data has a strong negative association.
How to interpret Correlation Coefficient?The correlation coefficient is defined as a statistical measure of the strength of a linear relationship that exists between two variables.
The possible range of values for correlation coefficient is from -1.0 to 1.0. This tells us that the values cannot be more than 1.0 nor be less than -1.0.
Thus, a correlation coefficient of -1.0 shows a perfect negative correlation, while a correlation coefficient of 1.0 shows a perfect positive correlation.
We are given a correlation coefficient of r = -0.9478.
Now, the closer the negative correlation is to -1 indicates a strong negative correlation while the farther it is from -1 indicates a weak negative correlation.
Thus, we can conclude that in this case where the negative correlation is closer to -1 than farther, it can be said to be a strong negative correlation.
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Phil Dunphy, a real estate agent, is considering whether he should list an unusual $451,299 house for sale. If he lists it, he will need to spend $3,925 in advertising, staging, and fresh cookies. The current owner has given Phil 6 months to sell the house. If he sells it, he will receive a commission of $20,283. If he is unable to sell the house, he will lose the listing and his expenses. Phil estimates the probability of selling this house in 6 months to be 37%. What is the expected profit on this listing.
Answers
Answer:
The expected profit on the listing is $5031.96
Step-by-step explanation:
Given that:
The probability of selling the house in 6 months is p = 0.37
The probability of not selling the house = 1 - 0.37 = 0.63
Suppose Y represents the profit on the listing,
Then: the expected profit on the listing can be computed as:
E(X) = ($20283* 0.37) - ($3925*0.63)
E(X) = $7504.71 - $2472.75
E(X) = $5031.96
Thus, the expected profit on the listing is $5031.96
The expected profit on the listing is $5031.96.
Calculation of the expected profit:Since
The probability of selling the house in 6 months is p = 0.37
The probability of not selling the house = 1 - 0.37 = 0.63
here Y means the profit on the listing,
So, the expected profit is
E(X) = ($20283* 0.37) - ($3925*0.63)
E(X) = $7504.71 - $2472.75
E(X) = $5031.96
Thus, the expected profit on the listing is $5031.96.
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To use the two sample t procedure to perform a significance test on the difference of two means, we assume:
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We assume that the population standard deviation are known, the samples from each population are independent, the population is normally distributed if we use t test of two samples.
Given T test of significance has been used.
T test is a statistical test that is like z test. Z test is used when n>30 and t test is used when n<30. It is used in hypothesis testing.
We know that there are many test which can be used to test a hypothesis.
The requirements to perform a two sample t procedure are as follows:
1)The two samples have equal variance. Hence the variance should be known.
2) The samples for which the two sample t procedure is performed must be independent.
3) The data are in alignment with the normal distribution probability.
4) The sample are random samples taken from different respective population.
Hence when two sample t procedure is performed we have to assume population standard deviation is known and population is normally distributed.
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What is
5/9
as a decimal rounded to 3 decimal places?
Answers
To the decimal of a fraction divided the top part of a fraction by the bottom part of the fraction
For this problem in particular 5 divided by 9 which equals 0.555555555556 which rounds to 0.556
i would like help in this question
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Answer:
T = 3.5m
T is trash in pounds
m is members of family
Step-by-step explanation:
A single number that estimates the value of an unknown parameter is called a _______ estimate.
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Answer:
A single number that estimates the value of an unknown parameter is called a point estimate.
Step-by-step explanation:
Don't see the point (haha) of elaborating
A rocket was launched into the air. The height of the rocket in feet, h is modeled by the followingequation, h(t) = -165 - 95t where t is the time in seconds after the rocket was launched. What was themaximum height of the rocket? How long does it take for the rocket its maximum height? How long didit take the rocket to hit the ground? Round to the nearest whole foot second.
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The maximum height and the time elapsed to reach that maximum height is found locating the vertex of the quadratic function.
The equation:
\(h(t)=-16t^2+95t\)has the form:
\(f(t)=at^2+bt+c\)with a = -16, b = 95, and c = 0.
The vertex is found as follows:
\(\begin{gathered} t=\frac{-b}{2a} \\ t=\frac{-95}{2\cdot(-16)} \\ t=3\text{ seconds} \end{gathered}\)The height is found evaluating the function at t = 3.
\(undefined\)PLEASE ANSWER!!!!!
What is the definition of the Segment Addition?
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2. Is the following inequality always, sometimes, or never true?
2(3x - 1) +4> 6x + 2
Answers
The two sides of an inequality are not the same so inequality can never be true.
What is inequality?When two expressions are connected by a sign like "not equal to," "greater than," or "less than," it is said to be inequitable. The inequality shows the greater than and less than relationship between variables and the numbers.
Given that the inequality is 2(3x - 1) +4> 6x + 2. The inequality will be solved as below;-
2(3x - 1) +4> 6x + 2
6x - 2 + 4 > 6x + 2
6x + 2 > 6x + 2
The two sides are equal so inequality can never be true.
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after allowing a 15% discount on the Marked price of a radio becomes rupees 1997 find the Marked price of the radio
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Answer:
after discount sales price is rs 1997 which is 85 % of market price the market price = 1997/85×100 = 2350 ans.
Multiply 13.5 x 12.1 using a regrouping strategy. Explain your answer and each step that you take.
Answers
Answer:
163.485
Step-by-step explanation:
multiply 13.5 x 12.11
8th grade mathematics
What is the x-intercept of the graph that is shown below?
O (-2, 0)
O (-1, 2)
O (0,4)
O (4,0)
I appreciate all of your answers, thank you :)
Answers
Answer: (-2, 0)
Step-by-step explanation:
1. The arrow crossed the -2 and the y-axis 4.
2. We don't need the y-axis due to it asked what is the x-intercept.
3. So, they y-axis stays zero while the x-axis is -2.
Jada keeps 175 hair beads in a storage box. She chooses a bead without looking what
color it is, and returns it to the box. She does this severaltimes.
Pink - 7
Green - 8
Red - 10
How many pink beads are in Jadas storage box
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The probability of getting a pink bead out of the storage box containing a sum total of 175 beads is 0.1428
As per the question statement, we are supposed to find the probability of getting a pink bead out of the storage box containing a sum total of 175 beads.
It is given that there are 25 pink beads in the storage box.
Probability = Favorable outcome / Total value
Probability = 25/175
Probability = 0.1428
Hence, the probability of getting a pink bead out of the storage box containing a sum total of 175 beads is 0.1428
Probability: The chances of happening or not happening of any event.To learn more about probability and similar concept, click on the link given below:
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Someone explain please
Answers
Answer:
SA = 94 ft²
Step-by-step explanation:
To find the surface area of a rectangular prism, you can use the equation:
SA = 2 ( wl + hl + hw )
SA = surface area of rectangular prism
l = length
w = width
h = height
In the image, we are given the following information:
l = 4
w = 5
h = 3
Now, let's plug in the information given to us to solve for surface area:
SA = 2 ( wl + hl + hw)
SA = 2 ( 5(4) + 3(4) + 3(5) )
SA = 2 ( 20 + 12 + 15 )
SA = 2 ( 47 )
SA = 94 ft²
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Brian deposited $2,419 into a savings account for which interest is compoundedquarterly at a rate of 2.54%. How much interest will he earn after 7 years? Roundanswer to the hundredths place. If answer does not have a hundredths place theninclude zeros so it does. Do not include units in the answer.
Answers
Given
Principal = $2419
rate = 2.54%
time = 7 years
compounds quarterly
\(\begin{gathered} A=P(1+\frac{r}{n})^{nt} \\ A=2419(1+\frac{0.0254}{4})^{4(7)} \\ A=2419(1.00635)^{28} \\ A=2888.08 \end{gathered}\)After 7 years, the amount deposit is now $2888.08, subtract by the principal amount to get the interest.
\(\begin{gathered} I=A-P \\ I=2888.08-2419 \\ I=469.08 \end{gathered}\)Therefore, the interest that he will earn after 7 years us $469.08.
Alexander is a stockbroker. He earns 11% commission each week. Last week, he sold $5,400 worth of stocks. How much did he make last week in commission? If he averages that same amount each week, how much did he make in commission in 2011?
Answers
Answer: 594 and 30888
Step-by-step explanation:
5400 x 0.11 = 594
594 dollars in commission of one week
52 weeks in a year
52 x 594 = 30888 dollars made in 2011
594 dollars in commission of one week.
$30888 he make in commission in 2011.
What is Unitary Method?The unitary technique involves first determining the value of a single unit, followed by the value of the necessary number of units.
For example, Let's say Ram spends 36 Rs. for a dozen (12) bananas.
12 bananas will set you back 36 Rs. 1 banana costs 36 x 12 = 3 Rupees.
As a result, one banana costs three rupees. Let's say we need to calculate the price of 15 bananas.
This may be done as follows: 15 bananas cost 3 rupees each; 15 units cost 45 rupees.
Given:
Stocks sold= $5400
Commission each week = 11%
So, Commission on Stocks sold
= 5400 x 0.11
= 594
Thus, 594 dollars in commission of one week.
As, 1 Year = 52 weeks
So, He can make in 2011 = 52 x 594 = $30888
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HELLPPP How many lines in the plane are perpendicular bisectors of the segment?
O one
O two
O infinitely many
Onone
Answers
We have one line in the plane as the perpendicular bisector of the segment.
What is perpendicular bisector?This is the term that is used to refer to the line that is able to bisect another line in a right angle. This line would bisect it through the point of intersection.
We are told that when it is line in a plane, it would have one perpendicular bisector but it would be infinite if it is in space.
Hence we can conclude that We have one line in the plane as the perpendicular bisector of the segment.
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an urn contains 1 green ball, 1 red ball, 1 yellow ball and 1 white ball. i draw 3 balls with replacement. what is the probability that exactly two balls are of the same color?
Answers
The probability that exactly two balls are of the same color when drawing 3 balls with replacement from an urn containing 1 green ball, 1 red ball, 1 yellow ball and 1 white ball is 4/16 or 1/4.
There are three ways to draw two balls of the same color: two green balls and one of any other color, two red balls and one of any other color, or two yellow balls and one of any other color. Each of these ways can occur in 4 different orders (e.g. GGR, GRG, RGG, etc.) for a total of 12 possible outcomes. The probability of each of these outcomes is (1/4)^3 = 1/64. Therefore, the probability of exactly two balls being of the same color is 12/64 or simplified to 3/16, which is equivalent to 1/4.
Therefore, the probability of exactly two balls being of the same color when drawing 3 balls with replacement from an urn containing 1 green ball, 1 red ball, 1 yellow ball and 1 white ball is 1/4.
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evaluate the expression if a=3/4, b=-8, c=-2, and d=3
Answers
Answer: 206
Step-by-step explanation:
a=3/4, b=-8, c=-2, d=3
-b[a+(c-d)^2]=
-(-8)[3/4+(-2-3)^2]=
8[3/4+(-5)^2]=
8[3/4+25]=
8*3/4 + 200=
24/4 + 200=
6+200=206
First, solve the parentheses:
8[3/4 + -5^2]
Then, solve the exponent:
8[3/4 + 25]
Then, solve the brackets:
8[25.75]
Lastly, multiply:
206 is your answer
Michael has a bag of marbles. The frequency of selecting each color is recorded in the table below.
Outcome Frequency
Green 4
Black 6
Orange 5
Based on the given frequency, determine the experimental probability of selecting an orange marble.
0.27
0.33
0.40
0.67
Answers
The probability of selecting an orange marble is 0.33.
Option B is the correct answer.
What is probability?It is the chance of an event to occur from a total number of outcomes.
The formula for probability is given as:
Probability = Number of required events / Total number of outcomes.
We have,
The number of times each marble is selected.
Green = 4
Black = 6
Orange = 5
Total number of times all marbles are selected.
= 4 + 6 + 5
= 15
Now,
The probability of selecting an orange marble.
= 5/15
= 1/3
= 0.33
Thus,
The probability of selecting an orange marble is 0.33.
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Can someone help me please
I will give Brainiest
Don’t need to show work
Answers
Answer:
24
Step-by-step explanation:
Do tell me if you ever change your mind and want me to show work :)
When graphing the solution of an inequality on a number line, you will see either an open or closed circle and a part of the line shaded.
Part A:
Describe what an open circle represents and when you would use it.
Part B:
Describe what a closed circle represents and when you would use it.
Part C:
Describe what the shading on the number line represents.
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Part A: An open circle on a number line represents an excluded value, indicating that the endpoint is not included in the solution set of the inequality. It is used when the inequality includes the symbols < (less than) or > (greater than), which denote strict inequality.
Part B: A closed circle on a number line represents an included value, indicating that the endpoint is part of the solution set of the inequality. It is used when the inequality includes the symbols ≤ (less than or equal to) or ≥ (greater than or equal to), which denote inclusive inequality.
Part C: The shading on the number line represents the range of values that satisfy the given inequality. It indicates which values make the inequality true. Typically, the shading is done to the right or left of the circle(s) depending on whether the inequality is greater than or less than.
Part A:
For example, if we have the inequality x > 2, we would represent it with an open circle at 2 on the number line. This means that 2 itself is not a valid solution, but any value greater than 2 is included.
Part B:
For example, if we have the inequality x ≥ -3, we would represent it with a closed circle at -3 on the number line. This means that -3 itself is a valid solution, as well as any value greater than or equal to -3.
Part C:
For example, if we have the inequality x > 2, we would shade the portion of the number line to the right of the open circle at 2. The shaded region represents all the values greater than 2 that satisfy the inequality. The shading visually illustrates the solution set and helps identify the range of valid values for the variable in the given inequality.
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In an experimental study, random error due to individual differences can be reduced if a(n) _____ is implemented.
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In an experimental study, random error due to individual differences can be reduced if a(n) control group is implemented.
One effective way to reduce random error due to individual differences in an experimental study is to include a control group. A control group serves as a baseline comparison group that does not receive the experimental treatment. By having a control group, researchers can isolate and measure the effects of the independent variable more accurately.
The control group provides a point of reference to assess the impact of individual differences on the study's outcome. Since both the experimental group and control group are subject to the same conditions, any observed differences can be attributed to the experimental treatment rather than individual variations.
This helps to minimize the influence of confounding variables and random error associated with individual differences.
By comparing the outcomes of the experimental group and control group, researchers can gain insights into the specific effects of the treatment while controlling for individual differences. This improves the internal validity of the study by reducing the potential bias introduced by individual variability.
In summary, including a control group in an experimental study helps to reduce random error due to individual differences by providing a comparison group that is not exposed to the experimental treatment. This allows researchers to isolate and measure the effects of the independent variable more accurately.
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I NEED URGENT HELP WILL GIVE BRAINIEST!!!!
Answers
Answer:
21
Step-by-step explanation:
When two secant lines intersect, then the product of the length of the portion of each secant line outside the circle and the entire length of the secant line are equal for both lines. Thus, to find a missing value when two secant lines intersect, we apply the relationship stated above and solve for the missing value.
So FE x GE = DE x CE
since GE = FE + GF = 21 + 18 = 39
CE = DE + CD = 20 + CD
then
21 x 39 = 20 (20 + CD)
CD + 20 = 819/20
CD + 20 = 40.95
CD = 40.95 - 20 = 20.95 or 21
A sales associate in a jewelry store earns $450 each week, plus a commission equal to 2% of her sales. this week her goal is to earn at least $800. how much must the associate sell in order to reach her goal
Answers
In order for the associate to meet her objective of making at least $800, she must sell at least $17,500 worth of jewelry.
To solve this problemWe must figure out how many sales are necessary to get that income.
Let's write "S" to represent the sales amount.
The associate's base pay is $450 per week, and she receives a commission of 2% of her sales. Her commission is therefore equal to 0.02S (2% of sales), which can be computed.
The total income must be at least $800 in order for her to fulfill her goal. As a result, we may construct the equation shown below:
Base Salary + Commission ≥ Goal
$450 + 0.02S ≥ $800
Now, we can solve the inequality to find the minimum sales amount:
0.02S ≥ $800 - $450
0.02S ≥ $350
Divide both sides by 0.02 to isolate 'S':
S ≥ $350 / 0.02
S ≥ $17,500
Therefore, In order for the associate to meet her objective of making at least $800, she must sell at least $17,500 worth of jewelry.
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Please help me with this question
Answers
Answer:
Ab and Xz are congruent, and B=X, A=Z, which proves it is with SAS
Step-by-step explanation:
What does congruent mean
Answers
Answer:
If two figures have the same size and shape, then they are congruent. so if they have the same shape and size even if they are flipped or mirrored they are congruent.
Step-by-step explanation:
The term congruent is often used to describe figures like this, the pictire below. if you look up congruent shapes and look at many examples that will definitely help you understand alot more better what congruent means.
Please help me. Will give brainliest if you help with my HW.
Answers
Answer:
Your answer is n(n+1)
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2.4(x - 6) = -5.6x + 8
Answers
Let's solve your equation step-by-step
2.4(x-6)=-5.6x+8
Step 1: simplify both sides of the equation
2.4(x-6)=-5.6x+8
(2.4)(x)+(2.4)(-6)=-5.6x+8 (distribute)
2.4x+-14.4=-5.6x+8
2.4x-14.4=5.6x+8
Step 2: Add 5.6x to both sides.
2.4x-14.4+5.6x=-5.6x+8+5.6x
8x-14.4=8
Step 3:Add 14.4 to both sides
8x-14.4+14.4=8+14.4
8x=22.4
Step 4 : Divide both sides by 8
8x/8 =22.4/8
Answer : x=2.8
how many solutions does the following equation have?
4(2x+3)-7=8x+5
a- infinite
b- no solution
c- one solution