MATHEMATICS MIDDLE SCHOOL

Solve the equation for x. 2(2x - 4) = 3(x + 4) a. -4 c. 20 b. 4 d. 6

Answers

Answer 1
Answer:

Answer:

\mathrm{C}

Step-by-step explanation:

2(2x - 4) = 3(x + 4)

4x-8=3x+12

4x-3x=12+8

1x=20

x=20
Answer 2
Answer:

Answer:

the correct answer is 20. Option C

Step-by-step explanation:

2(2x-4)=3(x+4)

4x-8=3x+12

x=12+8

x=20

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PLEASE HELP!!! I WILL GIVE BRAINLIEST!!!Graph the image of the figure after a dilation with a scale factor of 1/3 centered at (1, -2).

Answers

(2,1) , (1,-2) , (-5,0)

BRAINLIEST!?

What is this???? Yall are so helpful but do this fast

Answers

Answer:

the answer would be 5 and 2 and 30

Step-by-step explanation:

so first in the first box to the far left put 5 then inside the parenthesis do 2 and 30.

Can someone help me please and ignore the written problems they are wrong and please attach a picture to the answer...

Answers

16)134,070
17.328,308
18.163,500
19.340,080

What is the percent increase on 438,000 from 561,000

Answers

So, first you have to put the amount of decrease/increase over the original amount. (like a fraction!) then you are trying to find the percent so you would do x over 100. so it would look like; 438,000       x
                                                   -----------  =  -----
                                                    561,000     100
Then you would cross multiply (438,000 times 100 and 561,000 times x [which would be x])  and it would look like;  43,800,000 = 561,000x

(a shortcut for 0's is that if theres the same amount of them on each side just cross them out! It gives you the same amount every time!)

43,800=561x      and finally you would divide 43,800 by 561 and your answer is 78.07%
Hope I helped! :)
(561000-438000)/438000 x 100%
=123000/438000 x 100%
=28,08 %

For a chemistry lab, you used 2 ounces of calcium sulfate, 2.5 pounds of copper, and 1/4 lb of nickel. What was the combined weight of your materials?

Answers

What you want to do is convert all your amounts to ounces. 
There are 16 oz in a pound. 
So for the copper do this equation.
2.5*16=40
This means there are 40 oz of copper.
Do the same with nickel.
0.25*16=4 oz
This means you have 4 oz of nickel. 
Combine the numbers:
2+40+4=46
Your answer will be 46 oz of material. 
Hope this helps!

The correct answer is:

2 oz + 2.5 lb + 1/4 lb =

2 oz + 40 oz + 4 oz = 46 oz =

2 lb and 14 oz.

This answer is if you want it in pounds and ounces.

{8x [1+(20-6)]}รท 1/2=

Answers

you would do 20-6 which = 14. + 1 =15. times 8= 120 then divide that by 1/2 =  240 if you do 120 divided by .5 in a calculator thats what you get. i hope that helps you
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