Mathematics Middle School

Which is a simplified form of the expression 5c – 7(2c – 4)?
A. 9c + 28
B. -9c + 28
C. 9c - 28
D. -9c – 28

Which is a simplified form of the expression 3(m + 1) + 2m?
A. m + 3
B. 5m + 1
C. 3m + 1
D. 5m + 3

Answers

Answer 1
1.
5c-7(2c-4)
5c-14c+28
-9c+ 28
2.
3(m+1) + 2m
3m+3+2m
5m+3

Related Questions

I need help with this question

2x + 1/2 = -5

Answers

Answer:

fraction: x=-11/4

or

decimal: x= -2.75

Step-by-step explanation:

This is how I was taught to do it

What is the measure of angle x?

Enter your answer in the box.

Answers

It's 43

A right angle is 90 degrees

90-47=43
43 because 47+90=137 180-137=43

Robert wants to spend no more than $1,050 on his trip. The airfare is $450.
Write and solve an inequality to find the maximum amount he can spend
on the rest of his trip.

Answers

Answer:

1,050-450=600

The maximum he can spend is 600

X equals less then or equal to 600

Step-by-step explanation:

PLEASE HELP
Which question has statistical variability?
A. Do you own a bike?
B. How many bikes are parked at the bike rack?
C. What are the distances of my classmates’ bike ride to school?
D. How much did Andy’s bike cost?

Answers

Answer:

C

Step-by-step explanation:

The answers is C.What are the distances of my classmates’ bike ride to school.

use a case 1-case 2 ratio box to solve this problem: one hundred inches equals 254 centimetres. how many centimetres equals 250 inches? if you dont know what a case 1-case 2 ratio box is, search it up

Answers

Answer:

Step-by-step explanation:

you would have to do 254x250 and then it would equal 63500

Answer:

0.99

Step-by-step explanation:

250/254 is approx 0.99

If the sales tax in Ohio is 8%, how much tax would you pay in Ohio for sports equipment that costs $400?

Answers

Answer:$50

Step-by-step explanation:

Answer:

$32

Step-by-step explanation:

8% x 400

Neal deposits $340 into each of two savings accounts.

Account One earns 6% annual simple interest.
Account II earns 5% interest compounded annually.
Neal does not make any additional deposits or withdrawals. What is the sum of the balances of Account one and Account II at the end of 3 years?

Answers

Answer:

Account I: 61,2

Account II: 51

Step-by-step explanation:

6% 340 = 21,4

5% 340 = 17

21,4 . 3 = 61,2

17. 3 = 51

Useless Question #3! (first to answer will get brainliest cuz >:3)

What is [tex]((((1^2)^3)^4)^5)^6[/tex]?

Answers

Answer:

1 (that took a while to explain lol)

Step-by-step explanation

((((1^2)^3)^4)^5)^6) = ((((1)^3)^4)^5)^^) = (((1)^4)^5)^6) = ... = 1

The parentheses doesn't match up, so therefore, this equation is unanswerable. xD

This high school stadium contains a track that surrounds a soccer field. The soccer field is 100 yards long and 70 yards
What is the area of one of the semicircles at either end
The school decided to cover the semicircles with grass to create a space for stretching and other activities. How many square yards of grass will the school need to cover the entire circle
What is the distance around one of the semicircles at either end of the soccer field
What is the distance around the inner lane of the track the lane closest to the soccer field

PLEASE HELP!!

Answers

Answer:

7

Step-by-step explanation:

Answer:

the area for part 1 is 1924 part 2 is 3848 part 3 is 109 part 4 is 309

Step-by-step explanation:

part 1: A=1/2 pi r^2    d=70

r=70/2 = 35

A=(1/2(pi)(35)^2=1924

part 2: A=(2)(1924) = 3848

part 3: 1/2 pi d

c=(1/2(70)(pi))=109

part 4: =L+L+C    L=100yards

D=100+100+109=309

please mark brainliest hope this helps!!!

I need answers. please help!!!

Answers

Answer:

C. 2.28 with the line

Step-by-step explanation:

Trust.

Answer:

this is defiantly a

Step-by-step explanation:

14÷5 is 2.8

2.28(with a line above) means the 8 doesn't stop so its 2.2888888888

and then there is 2.88

the first one equals 2.82842712475 when you find the square root of 8

PLEASE HELP ME THIS ANSWER DRIVING ME CRAZY!!!

Answers

It’s mad blurry so if you want an answer you have to make it more clear
It’s blurry really blurry yuu needs make it more clear to get to get a answer

Please find the length of AB. :)

Answers

Answer:

6.4 units

Step-by-step explanation:

A = (2, 0). B = (-2, - 5)

Length of AB can be obtained by using distance formula:

[tex]l(AB) = \sqrt{ {( - 2 - 2)}^{2} + {( - 5 - 0)}^{2} } \\ = \sqrt{ {( - 4)}^{2} + {( - 5)}^{2} } \\ = \sqrt{16 + 25} \\ = \sqrt{41} \\ = 6.40312424 \\ l(AB) = 6.4 \: units[/tex]

GIVING BRAINLIEST AND THAMKS FOR BEST ANSWER

Answers

Answer:c.

Step-by-step explanation

can you pls help me with this it's about the immune system

Answers

Answer:

A Fever is an Inmune system response.

Step-by-step explanation: This is actually an immune system response. A rise in temperature can kill some microbes. Fever also triggers the body's repair process.

The two dot plots below show the heights of some sixth graders and some seventh graders:


The mean absolute deviation (MAD) for the first set of data is 1.2 and the MAD for the second set of data is 1.7. Approximately how many times the variability in the heights of the sixth graders is the variability in the heights of the seventh graders? (Round all values to the tenths place.)

1.2
1.4
2.4
2.8

Answers

Answer:

I believe the answer is 2.4 :)

Step-by-step explanation:

2.4 .................

2x5-2^2+1. How would you solve it?

Answers

Answer:

The answer would be 7

Step-by-step explanation:

2x5-2^2+1

=10-4+1

=7

40 points please help
don't waste my points

Answers

Answer:

1. 48°

2. (may be wrong) 42°

3. 109°

4. 30°

9. 180°

10. (may be wrong) 21°

11. 70°

12. 61°

Sheeeeesh y’all are smart bro

Please help me by solving the question attached to this question. This question has a lot of points.
If you saw one of my previous questions with words that did not make since my brother was using my account to post random questions so I am very sorry that I had to trouble you.

Answers

Answer:

2a. False, 2b. True, 2c. True. 2d. False

Step-by-step explanation:

I think, not 100% certain.

what is the area of the real object that the scale drawing models?

Answers

Answer:

A.20

Step-by-step explanation:

If the area for the scale drawing is 20 and the scale factor is 1:2 (which means its doubled) then the actual area would be 20. This would keep the 1:2 ration accurate. 1:2 = 10:20

Answer:

A. 20 cm²

Step-by-step explanation:

Identify whether this angle is acute, obtuse, right, or straight.

Answers

It obtuse because it’s over 90•

the last answers are cut off but can someone help with the first four??

Answers

Math is hard just wait until high school

Find the lateral surface area of the cylinder

Answers

Answer:

326.73

Step-by-step explanation:

2·π·4·9+2·π·42≈326.72564

Answer:

17 in

i'm truly sorry if i'm wrong i just wanted ti try and help you out

Step-by-step explanation:

MATH work to get out for today... THANKS!!!

Answers

Question 1 - Greater than (>)

Question 2 - Greater than (>)

Question 3 - Less than (<)

Question 4 - (3/2) , 0.70 , (2/3) , (13/20) , 60% , 0.07


Hope my answer helps you✌️

Mark BRAINLIEST

Two​ trains, Train A and Train​ B, weigh a total of tons. Train A is heavier than Train B. The difference of their weights is tons. What is the weight of each​ train?

Answers

Answer

312-170=142

142÷2=71

170+71=241

241+71=312

train A weighs 241 tons

Step-by-step explanation:

a right triangular prism has a volume of 48 cubic units. Find it’s new volume if two of its dimensions were tripled and a third dimension was halved.

Answers

Answer:

72

Step-by-step explanation:

If you wouldn't mind giving me brainliest, i'm just trying to rank up.

1. Identify the cross section from slicing
the figure vertically
O triangle
O rectangle
rectangular prism

Answers

The correct cross section is a rectangle


This table shows a linear relationship between the amount of water in a bath tub and time.

A. Find the rate.

B. Describe if it means that it is increase or decreasing.

Answers

it is increasing and i don’t know the rate

Find the volume of a sphere that has a diameter of 10 inches. Round your answers to the nearest tenth if necessary. Use 3.14 for pi.

Answers

Answer:

15.7 in.

Step-by-step explanation:

Diameter/2 times pi. and you get your answer.

Answer: 4188.8

Explanation: I just did this in class.

PLS HELP ME !!!!!!!!

Answers

balls

Step-by-step explanation:

balls balls

26 + 28 = 54 so 26 and 28

PLEASE HELLLLP!!!!!!!!!!!!
When we divide a number by 7, we get a result greater than 14. Write the inequality and use n as the variable.

Answers

Answer:

n/7 > 14

Step-by-step explanation:

N/7>14. Hope this helps
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