Answers
So basically you’re taking the fraction 80/60 and turning it into a decimal. That’s how you’ll rule out/check a-c. For b and e, you just have to simplify the fraction.
I hope this helps!!
A.. the number of hours is a terminating decimal
Related Questions
A triangle is shown with its exterior angles. The interior angles of the triangle are angles 2, 3, 5. The exterior angle at angle 2 is angle 1. The exterior angle at angle 3 is angle 4. The exterior angle at angle 5 is angle 6. Which statements are always true regarding the diagram? Select three options.
m∠5 + m∠3 = m∠4
m∠3 + m∠4 + m∠5 = 180°
m∠5 + m∠6 =180°
m∠2 + m∠3 = m∠6
m∠2 + m∠3 + m∠5 = 180°
Answers
Answer:
a d e
Step-by-step explanation:
Help me!!!!!!!!!!!!!!!!!!!!!!!!!!!!! with (11)(−4) 12=
Answers
Answer:
you just multiply the values inside the parentheses. 11 x -4 x 12, so its -44 x 12, being -528
Step-by-step explanation:
Find the area of the polygon.
Answers
3x3=9x2=18
The area would be 51 because you can cut off the two squares making the sides be 3by3 then the rectangle would be 3by11. And you would do HxL. So the area is 51cm
Which system of equations has one solution?
On a coordinate plane, 2 lines intersect at one point.
On a coordinate plane, 2 lines are parallel to each other.
On a coordinate plane, a line has a positive slope.
Answers
Answer:
A
Step-by-step explanation:
Hence, the option (A) is the correct answer i.e., On a coordinate plane, two lines intersect at one point
What are the one solution ?
One Solution Equation is when an equation has only one solution. This means that when you solve an equation, the variable can only be subsituted by one number to make an equation true.
So, when the two lines passes and intersect at one point it forms one solution so that is why option (A) is correct i.e., On a coordinate plane, two lines intersect at one point.
Hence, the option (A) is the correct answer i.e., On a coordinate plane, two lines intersect at one point
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an athelete trains for 115 min each day for as many days as possible. Write an equation that relates the number of days d that the athlete spends training when the athlete trains for 690 min.
Answers
Answer:
athlete trains 115 minutes in 6 days to get a total of 690 minutes in all.
Step-by-step explanation:
115m = An athlete trains per day
690m = total minutes of athlete’s training
d = number of days
=> 115(d) = 690
=> 690 / 115 = 6
=> 115 (6) = 690
d = 6
At a hockey game, a vender sold a combined total of 192 sodas and hot dogs. The number of sodas sold was three times the number of hot dogs sold. Find the number of sodas and the number of hot dogs sold.
Answers
Answer:
Step-by-step explanation: just here 4 the points :) srry
Please help, I’m just getting back to school and forgot how to do this.
Solve using y=mx+b.
slope = undefined, and point = (-4, -8).
Please use an explanation so I can understand better in the future!
Answers
Answer:
x = - 4Step-by-step explanation:
The slope is the ratio of rise to run.
Rise is the difference of y-coordinates, run is the difference of x-coordinates.
Now, the slope is said undefined if the difference of x-coordinates is zero.
It means you have to divide by zero but it is impossible.
We have a point (- 4, - 8) and the slope is undefined.
It means our line has repeat x = -4 coordinates, it is a vertical line.
Its equation will be:
x = - 4Let's write the equation
m=undefined Point (-4,-8)\(\\ \sf\longmapsto y=mx+b\)
Line is parallel to y axis\(\\ \sf\longmapsto x+4=\dfrac{-8}{\infty}\)
\(\\ \sf\longmapsto x+4=0\)
\(\\ \sf\longmapsto x=-4\)
Identify the slope and y-intercept of the following line: 3x + y = -1
Answers
Answer:
Slope: -3
Y intercept: (0,-1)
Step-by-step explanation:
Answer: Slope -3
Y intercept -1
Step-by-step explanation:
Jasim wants to solve the equation 3x = 12. How could he use graphs to solve this equation?
Drag statements into order to complete an explanation.
Answers
Answer:
3x=12
divide boths by the coefficient of x
and x= 4
the base of a solid is bounded by y = √ x , y = 0 , x = 2 , and x = 6 . its cross-sections, taken perpendicular to the x-axis, are squares. find the volume of the solid in cubic units. show all work.
Answers
Answer:
16 cubic units
Step-by-step explanation:
\(\displaystyle V=\int^b_aA(x)\,dx\\\\V=\int^6_2(\sqrt{x})^2\,dx\\\\V=\int^6_2x\,dx\\\\V=\frac{1}{2}x^2\biggr|^6_2\\\\V=\frac{1}{2}(6)^2-\frac{1}{2}(2)^2\\\\V=\frac{1}{2}(36)-\frac{1}{2}(4)\\\\V=18-2\\\\V=16\)
A(x) represents the area of the cross-section, so in this case, we square \(\sqrt{x}-0\) which is just \(\sqrt{x}\)
an orchestra of 120 players takes 40 minutes to play beethoven’s 9th symphony," the question goes. "how long would it take for 60 players to play the symphony?"
Answers
The time it takes for an orchestra to perform a symphony is not dependent on the number of players. Therefore, the number of players does not directly affect the duration of the performance. In this case, it took the 120-player orchestra 40 minutes to play Beethoven's 9th Symphony.
Assuming that the tempo and performance style remain constant, it is reasonable to assume that a 60-player orchestra would also take 40 minutes to perform the same symphony. The time it takes to play a symphony is primarily determined by the composer's tempo markings and the musicians' interpretation of those markings. Therefore, reducing the number of players does not necessarily mean a shorter performance time.
In summary, the number of players in an orchestra does not determine the time it takes to perform a symphony. The performance time is influenced by factors such as the composer's tempo markings and the musicians' interpretation. Hence, a 60-player orchestra would likely take the same amount of time, approximately 40 minutes, to play Beethoven's 9th Symphony.
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The cost of a burger is $4.50. The cost of a soda is $.75. Greg wants to treat some friends to lunch. If he has $40, how many people can he buy lunch for? Use “let” statements and inequalities in your answer.
Answers
He can invite 7 friends.Because he had $40. He will spent for each person $5.25.
What is inequality?In mathematics, a relationship between two expression that are not equal to each other is called inequality.The word inequality mean not being equal ,especially in status, rights and opportunities.
What is statement?A statement is a declarative statement that is true or false but both not.A statement is also called proposition.It may contain symbols and words.
he has total money = $40
cost of burger =$4.50
cost of soda =$0.75
Let, he will spend for each person
4.50+0.75=$5.25
so, he can invite=40/5.25
=7.619
he can invite 7 friends.
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if r = 7 and s = 10, find R. Round to the nearest 10th
Answers
Answer:
R = 35.0
Step-by-step explanation:
We know tan theta = opp/ adj
tan R = r/s
tan R = 7/10
Take the inverse tan of each side
tan ^-1 tan (R) = tan ^-1 (7/10)
R =34.9920202
R = 35.0
Answer:
A. 35º
Step-by-step explanation:
a table of data is given. x f(x) −2 128 −1 27 0 5 1 1 2 0.1 which exponential model best represents the data? f(x) = 5(1.2)x f(x) = 5(0.2)x f(x) = 2(5)x f(x) = 2(0.5)x
Answers
An exponential model which best represents the data is,
f (x) = 5 (0.2)ˣ
We have to give that,
A table of data is shown in the attached image.
Let us assume that,
An exponential model which best represents the data is,
f (x) = abˣ
Put x = - 2, f (x) = 128 in above formula,
128 = a × b⁻² .. (i)
Put x = - 1, f (x) = 27,
27 = ab⁻¹ .. (ii)
Divide (i) by (i);
128/27 = 1/b
b = 27/128
b = 0.2
From (ii);
27 = a/0.2
a = 27 x 0.2
a = 5
Hence, An exponential model which best represents the data is,
f (x) = abˣ
Substitute a = 5, b = 0.2,
f (x) = 5 (0.2)ˣ
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Alyssa drives 10 miles in 20 minutes. If she drove one hour in total at the same rate, how far did she go? i know the answer but its not working for me on delta math
Answers
Answer:
30 miles
Step-by-step explanation:
20 x 3 is 60 minutes
10 x 3 is 30 miles
Terry bought 2 1/2 dozen chocolate chip cookies. She paid $15 for her purchase. If there are 12 cookies in each dozen, what is the cost per cookie?
Answers
Answer:
you have to divide 12 by 15
Step-by-step explanation:
find the taylor series for f(x) centered at the given value of a. f(x) = e2x, a = −8
Answers
The Taylor series expansion of \(f(x) = e^(2x)\) centered at a = -8 is: f(x) = \(e^(-16) + 2e^(-16)(x + 8) + 4e^(-16)(x + 8)^2/2! + 8e^(-16)(x + 8)^3/3! + ...\)
To find the Taylor series for the function f(x) = e^(2x) centered at a = -8, we can use the general formula for a Taylor series expansion:
\(f(x) = f(a) + f'(a)(x - a) + f''(a)(x - a)^2/2! + f'''(a)(x - a)^3/3! + ...\)
First, let's find the derivatives of f(x) = e^(2x):
\(f'(x) = 2e^(2x)\\f''(x) = 4e^(2x)\\f'''(x) = 8e^(2x)\\f''''(x) = 16e^(2x)\\\)
...
Now, let's evaluate these derivatives at x = -8:
f(-8) = e^(2(-8)) = e^(-16)
f'(-8) = 2e^(2(-8)) = 2e^(-16)
f''(-8) = 4e^(2(-8)) = 4e^(-16)
f'''(-8) = 8e^(2(-8)) = 8e^(-16)
...
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Can someone help me, please and thank you? I'll give BRAINLEST to the person who gets it right!!! Please have explained how to get the answer!!! *due tonight* I"L DO ANYTHING AND I MEAN ANYTHING
Answers
1) -10n -8= -118
Add 8 to both sides which takes you to -110
-10n=-110
Divide by -10 on both sides
N=11
Jordan drives to the store at 30 miles per hour. On her way home she averages only 20 miles per hour. If the total driving time takes half an hour how far does she live from the store?
Answers
Answer:
Jordan lives 18 miles away from the store
Step-by-step explanation:
Distance=speed × time
Where,
d= distance
s= speed
t= time
Total driving time takes half an hour
Distance=speed × time
time=Distance/speed
t=1.5
Speed 1=30 mph
Speed 2:=20 mph
t=d/s1 + d/s2
1.5=d/30 + d/20
1.5=20d + 30d / 600
1.5=50d/600
Cross product
1.5×600=50d
900=50d
Divide both sides by 50
900/50=d
18=d
Therefore,
d=18 miles
Jordan lives 18 miles away from the store
On the windowsill is a plant that is 10 inches tall. It is growing 3 inches per
week. A second plant, which is 17 inches tall, is on the coffee table. It is
growing 2 inches per week. Eventually the two plants will be the same
height. How tall will the plants be? How many weeks will that take? *
Answers
Answer:
7 weeks 31 inches
Step-by-step explanation:
first plant: y= 3w + 10
second plant: Y= 2w + 17
3w+10= 2w+17
w= 7
Angela and Jayden were at track practice. The track is 2/5 kilometers around. Angela ran 1 lap in 2 Minutes. Jayden ran 3 laps in 5 minutes. How many minutes does it take Angela to run one kilometer? What about Jayden?
Answers
Answer:
Step-by-step explanation:
Angel ran 1 lap in 2 minutes.
Jayden ran 3 laps in 5 minutes.
How many minutes does it take Angel to run one kilometer? What about Jayden?
How far does Angel run in one minute? What about Jayden?
Who is running faster? Explain your reasoning.
IM Commentary
Parts (a) and (b) of the task ask students to find the unit rates that one can compute in this context. Part (b) does not specify whether the units should be laps or km, so answers can be expressed using either one.
The purpose of part (c) is to give students an opportunity to make use of the unit rates that they found in parts (a) and (b). While it is possible for students to solve part (c) in other ways, the solution shown represents the kind of reasoning with unit rates that 7th graders should be able to do. It is important to note that the answer can be determined using different unit rates as long as the reasoning behind it is correct.
Solution
We can create a table that shows how far each person runs for a certain number of laps:
Number of laps Number of km
1 25
2 45
3 65
We can see from the table that 1 km is exactly half way between 2 and 3 laps. So it will take 2.5 laps to run 1 km.
Since it takes Angel 2 minutes to run 1 lap, she will take
2.5 laps1 km⋅2 minutes1 lap=5 minutes1 km.
So it takes Angel 5 minutes to run 1 km.
Since it takes Jayden 5 minutes to runs 3 laps, she runs 1 lap in 53 minutes. Thus, it takes Jayden
2.5 laps1 km⋅5 minutes3 laps=52⋅53 minutes/km=256 minutes/km=416 minutes/km.
So it takes Jayden 416 minutes to run 1 km.
Angel runs 1 lap in 2 minutes so she runs 12 lap in 1 minute. Since 1 lap is 25 km, 12 lap is 15 km. So she also runs 15 km in one minute.
Since Jayden runs 1 lap in 53 minutes, she will run 35 laps in 1 minute. Since Jayden runs 1 km in 256 minutes, she will run 625 km in 1 minute.
Jayden runs the same distance in less time than Angel (alternatively, Jayden runs farther in the same time than Angel), so Jayden is running faster than Angel.
You roll two number cubes at the same time. Each cube has sides numbered 1 through 6.
What is the probability that the sum of the numbers rolled is even or greater than 7? Enter
your answer as a fraction in simplest form.
The probability that the sum of the numbers rolled is even or greater than 7 is
Answers
The probability that the sum of the numbers rolled is even or greater than 7 can be found by determining the favorable outcomes and dividing them by the total possible outcomes.
Favorable outcomes:
Even sums: To get an even sum, one of the dice must be odd and the other even. There are 3 odd numbers (1, 3, 5) and 3 even numbers (2, 4, 6). So, there are 3 * 3 = 9 favorable outcomes for even sums.
Sums greater than 7: The combinations that yield sums greater than 7 are (2, 6), (3, 5), (4, 4), (4, 5), (5, 3), (5, 4), (5, 5), (6, 2), (6, 3), (6, 4), (6, 5), and (6, 6). There are 12 favorable outcomes for sums greater than 7.
Total possible outcomes:
Each dice has 6 possible outcomes, so the total number of possible outcomes is 6 * 6 = 36.
Therefore, the probability of rolling a sum that is even or greater than 7 is (9 + 12) / 36 = 21 / 36 = 7 / 12, which is the answer in simplest form.
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The congruence relation is used to define __________ . finite groups greatest common divisor lowest common divisor residue classes
Answers
The congruence relation is used to define residue classes.
Congruence is an important idea in algebra that is often used to describe equivalence classes of integers modulo some integer n. A congruence relation on a set of integers is a binary relation that reflects equality modulo some integer n. Specifically, if a and b are two integers, then we say that a is congruent to b modulo n, or a ≡ b (mod n), if a - b is divisible by n.
The congruence relation is used to partition the set of integers into equivalence classes that are referred to as residue classes. Each residue class is represented by a single integer that is congruent to all the other integers in the class. In other words, a residue class is a collection of integers that have the same remainder when divided by n. There are exactly n residue classes modulo n, each of which is represented by a unique integer from 0 to n-1. Residue classes are used extensively in number theory and algebraic geometry, where they are used to study systems of equations and algebraic curves.
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Find the value of the expression:
A + B - 3
For a =10 and b = 7
Answers
Answer:
14
Step-by-step explanation:
10+7 = 17 - 3 = 14
which of the following shows the best way to set up the product of (7x-1) and (5-4x+6x³)
Answers
last choice
x² needs to be represented
so you have to put a 0 there
6x³+ 0x² -4x +5
7x - 1
answer this question! i am having some trouble in khan..
Answers
solve/x+6/=8 solving absolute value equations
Answers
Answer:
x=2
Step-by-step explanation:
transpose 6
8-6 is 2
u can also check if u say 2 + 6 it will give u 8 which means 2 is correct
Juana is interested in estimating how long it takes students at her school to complete a maze she designed. She takes a random sample of 4 students and records how long it takes each of them to complete the maze. They work separately from each other, so Juana is willing to assume independence. Here are the data with summary
statistics:
Answers
The 95 percent confidence interval for the mean time (in seconds) it takes students to complete this maze is: 39±1.96(8.83/√4).
Confidence intervalUsing this formula
Confidence interval=Mean ± z × Standard deviation√Sample size
Where:
xMean=39Z value for 95% CI=1.96Standard deviation=8.83Sample size=4Let plug in the formula
Confidence interval=39±1.96×8.83/√4
Confidence interval=39±8.65
Inconclusion the 95 percent confidence interval for the mean time (in seconds) it takes students to complete this maze is: 39±1.96(8.83/√4).
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two car rental companies charge a one-time fee and a millage rate for renting a car the graph below compares the cost for renting cars from the two companies based on the graph which of the following statements appears to be true about the costs of renting cars from the two companies
Answers
From the graph we notice that the lines are parallel. This means that the slopes of the lines representing the cost are the same. Since the slope represents the price per mile travel we conclude that:
The mileage at both companies is the same.
Therefore the answer is B
In an analysis of variance problem if SST = 120 and SSTR-80, then SSE is
a. 200
b. 40
c. 80
d. 120
Answers
The value of SSE (sum squared error) is 40 in the given analysis of the variance problem if SST = 120 and SSR = 80. Option b is correct.
How to find SSE in an analysis of variance problems with the SST and SSR values?Here the words SSE means Sum Squared Error, SST means Sum of Squares Total and SSR means Sum of Square Regression.
In the SSE accuracy measure, errors are squared and then added. It is used when the data points are similar in magnitude.
The formula is SST = SSR + SSE ⇒ SSE = SST - SSR
Calculation:The given values of the analysis of the variance problem are
SST = 120; SSR = 80
Then, the value of SSE = SST - SSR = 120 - 80 = 40
So, option b is correct.
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