3 years ago

1) Subtract:

1 answer:

6 0

1) a 2) c 3) c Details can be explained, it is easier to work backwards from a solution through the problem, though. I hope this helps at all. Ahawk

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Write and solve a system of equations for the situation described below. Define your variables and write your solution as a sent

Delicious77 [7]

N = nickels and q = quarters

0.05n + 0.25q = 1.90
n = 2q + 3

0.05(2q + 3) + 0.25q = 1.90
0.10q + 0.15 + 0.25q = 1.90
0.10q + 0.25q = 1.90 - 0.15
0.35q = 1.75
q = 1.75/0.35
q = 5 ......there are 5 quarters

n = 2q + 3
n = 2(5) + 3
n = 10 + 3
n = 13 <=== there are 13 nickels

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3 years ago

A rectangular solid has sides of 7 cm + 9 cm + 11 cm what is its surface area

alina1380 [7]

Your answer would be: 693.

Explanation:

When finding the area in a problem use L×W×H.

That being said, you now have to multiply the L×W×H (7x9x11)

7 × 9 × 11 = 693

So the answer would be 693 because, if you are finding an area you use L×W×H to find your area.

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3 years ago

Read 2 more answers

A pair of pants with a marked price of $35.00 has a discount of 20%. How much is the discount? Can someone help me learn to do p

andreyandreev [35.5K]

When you see a "%" you need to ask " a percent of what"?

Here, it's a percent of the original prize, so the discount is 20% of the original prize, that is 20% of 35.

20% is also 20/100 or 1/5, so we can calculate this like this:

$\frac{1}{5} *35=7$

so the discount is 7 dollars.

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3 years ago

Two Step Equations 9=5- 9/3

Alex787 [66]

9=5 -y/3
-5
3=-y/3
cross multiply
1=-y
y=-1

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2 years ago

The poster shows how many of its games of football team has won so far.Express this information as a fraction a,percent and as a

Harrizon [31]

12/15
Divide 12 by 15 and then you should get 0.8
0.8 is obviously equal to 8/10ths or 80%
Hope this helps :)

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3 years ago