Mathematics Middle School

Expand the expression and simplify: 3.5(-2n + 4).

Answers

Answer 1

Answer:

-7n+17

Step-by-step explanation:

3.5(-2n + 4)=3.5×(-2n)+3.5×4=-7n+17

Answer 2

Answer:

-7n+17

Step-by-step explanation:

3.5(-2n + 4)=3.5×(-2n)+3.5×4=-7n+17

Related Questions

36. Find the side length of a cube whose surface area is 10848 cm2.

Write your answer to 2 decimal places.

Answers

Answer:

Step-by-step explanation:

Surface area of cube = 10848 square cm

6a² = 10848

Divide both sides by 6

a² = 10848/6

a² = 1808

a = √1808

a = 42.52 cm

All of the students in Mr. Goshen’s class have taken a test. The sum of their test scores is 1700.
All of the students in Mr. Haas’s class have taken the same test, and the sum of their test scores is 1650.
Is it possible to compare the mean score of the test-takers in Mr. Goshen’s class to the mean score of the test-takers in Mr. Haas’s class? Explain your answer.

Answers

Answer:

No, because we don’t know how many students are in each class

Step-by-step explanation:

What is value of K? It's not multiple choice.

Answers

Answer:

f(x) = (x + 4)²

g(x) = (x - 2)² = ((x - 6) + 4)² = f(x - 6)

k = 6

Write a system of two linear equations showing the distance each animal can
travel to model the fair race. Be sure to define all variables.
Y= output (distance) 5 mile lion/ 2.5 mile elephant
M=slope (speed) 50 lion /25 elephant
X=input(time) 6 minutes both

Answers

Answer:

X

Step-by-step explanation:

X=input(time) 6 minutes both

Delias paycheck of $348 i automatically deposited into her checking account right before the check was deposited her account balance was $143 she deposited a check of $25 into her account that same day she withdrew $95 from her account what was delias account balance before all these transactions

Answers

I think that it is 491

I only have two questions from my homework that I don't have done, and I need a bit of help, please end thank you!

Answers

For number 10 it’s 1372in^3/3

Amy is having her birthday party at a skating rink. The rink charges $50 plus $8 per person. If Amy wants to spend at most $200, how many people can she invite? (Hint: make sure you include Amy in the head count.)

Answers

Answer:

18

Step-by-step explanation:

Amy can invite 18 people (including herself). $200-$50=$150. $150÷8=18.75. You can't have 18.75 people so you round it down to 18. Hope this helps!

Answer: 18 people including herself

Step-by-step explanation: Take $200-$50=$150

now divide 150 by 8 which is 18.75 you obviously can't round up so you round down to just 18 and thats your answer. she can have 18 people there including herself

The following table shows the data collected from a random sample of 100 middle school students on the number of hours they do household chores every week: Weekly Duration of Household Chores Time (in hours) 0–1 2–3 4–5 6–7 Number of Students 32 64 3 1 There are 1,500 students in the school. Based on the sample proportion, how many students in the school would be expected to do household chores for at least two hours every week? 480 960 1,020 1,440

Answers

Answer:

1020

hope that helps

Answer:

1,020

Step-by-step explanation:

The person above me is 100% correct! Good job to who ever you are! :)

Which best describes the error in finding the surface area of the cylinder?
T^T

Answers

Answer:

They only put 1 base instead of 2 bases, so its D

the real answer is 156pi = 489.84

Step-by-step explanation:

D I’m sure of it….yeah

PLS HELP THIS IS DUE TODAY!

Answers

Answer:

1431

Step-by-step explanation:

multiply height * length * width to get the volume of a shape

Answer:

1431

Step-by-step explanation:

you need to multiply the length*width *height

Math- find the angle OPR.

Answers

Answer:

is there more info to this like did they give you the angles value or something?

Step-by-step explanation:

I don’t see any degrees for any of the letters

A real estate agent has sold a house for $350,000. She earns 3% commission. How much did she earn? Show your work!

Answers

3% is equal to .03 so .03 times $350,000 equals $10,500

Well, let’s get started! The major here is dollars and percentages. Let’s have a look: 350,000/100%. Do you know why? 350,000 is the total, which is 100%. The seller only earns 3%. So let’s compare:

350,000          ?

————-        ——-

100%                 3%

Now we do 350,000 times 3. This is because ? Times 100 is equal to 350,000 times 3. 350,000 time 3 is 1,050,000. Now we do 1,050,000 divided by 100. This equals 10,500.

10,500 is your answer

HELP ME ILL GIVE BRAINLIEST FOR THE CORRECT ANSWER!!!!

Answers

Answer:

measure of each pink central angle is 40°

i.e a=40°

The diameter of a bicycle wheel is 16 inches. How many revolutions will it take the wheel to travel about 192 inches?

a.8
b.4
c.1
d.16

Answers

Answer:

its actuly 12

Step-by-step explanation:

16x12=192

The number of revolutions it takes the wheel to travel about 192 inches is 4. Therefore, option B is the correct answer.

What is circumference of a circle?

The circumference of a circle is the perimeter of the circle. It is the total length of the boundary of the circle. The circumference of a circle is the product of the constant π and the diameter of the circle.

Given that, the diameter of a bicycle wheel is 16 inches.

We know that, the radius of a circle is diameter/2

Here, radius of bicycle wheel =16/2 =8 inches

As we know, the circumference of a circle is 2πr

Now, circumference of bicycle wheel is

2×3.14×8

= 50.24 feet

The wheel to travel about 192 inches

Number of revolutions =192/50.24

= 3.82

≈ 4

The number of revolutions are 4. Therefore, option B is the correct answer.

Learn more about the circumference here:

brainly.com/question/28757341.

#SPJ2

Point Q is located at (27, -30). It is dilated by a scale factor of 1/6, with center of dilation as the origin.

Answers

Answer:

Ok sir what is the objective

Step-by-step explanation:

what is the correct scientific notation for these two questions?

Answers

Answer:

The image is blurry on my screen

Step-by-step explanation:

The answer to both should be B

The graph shows the population of sun dale from 1950 to 2000

Answers

Answer:

from 1980 to 1990

Step-by-step explanation:

1980 to 1990 is when it increased the most

Can you help me with this

Answers

Answer:

C I think

Step-by-step explanation:

Answer:

d

Step-by-step explanation:

23*1 is 23

the other ones can have other multiples

Which best describes the error in finding the surface area of the cylinder?
I aM CoNfuSiOn

Answers

Answer: The area of only one base was added. The first term should have a factor of 2.

Correct surface area: 156[tex]\pi[/tex]=490.1 yd^2

   

Step-by-step explanation:

The formula for each base is π*r²

[tex]\pi[/tex]*5^2 is only one base. Multiply this by two to get the total of both bases.

Plz help me. Freaking Brainly won't let me put just "Plz help me" cuz its too short..smh

Answers

Answer:

900 cubic mm

Step-by-step explanation:

You find the volume of a pyramid by using base x height/3. Since the dimensions of the prism and pyramid ate the same, and prisms are just base x height, you multiply the pyramid's area by 3.

600 mm2 because the area of the prism is cut in half

A) 5/9
B) 6/5
C) 1/6
D) 5/6

Answers

answer : c

Explanation

Where is point B on the number line

Answers

Answer:

It is at -0.4

Step-by-step explanation:

If the point is behind -0.5, hat makes it -0.4 Have a great day : )

Is at 4.0 that is were the B was

Find the slope of the line below using rise/run.
​

Answers

Answer:

3/1 = 3

Step-by-step explanation:

Two coordinates, 6/2 and 3/1 have a difference of 3/1, or 3.

Answer:

[tex]\frac{3}{1}[/tex]

Step-by-step explanation:

If you start at the point (0,0) and you rise 3 and run 1, there is your slope.

3. if y varies directly as x and y=23.1 when x=36.3, find y when x=11.
4. If y varies directly as x and y=4 when = 18, find y when x =27.
5.if y varies directly as x and y =6 when x =14 ,find y when x=35.
6.if y varies directly as x and y=2 when x=12, find y when x = 30.

please help me

Answers

Answer:

20 i. think hope it helps you

have a good day

Determine the probability of rolling a number that is not even.
a. Which outcome or outcomes make up the event of rolling a number that is not even?

b. Calculate the probability of rolling a number that is not even.

Answers

Answer:

50%

Step-by-step explanation:

Answer:

a. Rolling an odd number (not even): rolling a 1, 3 or 5

b. 50%

Step-by-step explanation:

There are 6 possible outcomes; 1, 2, 3, 4, 5 and 6.

Out of these there are 3 odd numbers (not even) and 3 even numbers

so 3 (odd numbers) / 6 (possible outcomes) = 1/2 = 50%

Can someone answer this its just boxplots :)))

Answers

Answer:

B.

Step-by-step explanation:

The answer is B because the box and whisker plot has a line in the middle to show the mean or average. C may seem correct but it is not because the range is actually 100-900.

Answer:

100-900

Step-by-step explanation:

ok you nijgaer

Which relation is a linear function with the least slope?

A. Y = 4x^2 + 9

B.
x //// y
−5 //// 6
0 //// 10
5 //// 14
10 /// 18

Answers

It would be the first graph because the slope would be zero making it the smallest

please help me someone :

Answers

Answer:

First one is 44

Second is 24

Step-by-step explanation:

Divide it to small rectangle and find area then add together

answer to question:

8) 44cm^2

9) 27cm^2

Roger has two dogs which are named Sparky and Cookie. The relationship of Sparky’s age, s, and Cookie’s age, c, can be represented by the equation shown below. s = c + 4

​

Answers

Sparky is 4 years older than Cookie

You are wrapping a gift in a rectangular box, and you need to know how much wrapping paper to use. You need to know the

A
volume of the box.

B
area of the box.

C
perimeter of the top of the box.

D
surface area of the box.

Answers

D, you need to know the surface area of the box.
I think the answer is D
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