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lakkis [162]
3 years ago
14

One number is seven more than twice another . If their sum is decreased my ten the result is twelve. Find the numbers

Mathematics
1 answer:
Rainbow [258]3 years ago
3 0

Answer:

5, 17

Step-by-step explanation:

For this problem, you need to create a system of equations.

We can name one number x and the other y.

First equation: 2x + 7 = y

Second equation: x + y - 10 = 12, or x + y = 22.

We know y = 2x + 7, so we can substitute that into the second equation.

x + 2x + 7 = 22.

3x = 15

x = 5.

Plug x back into the first equation:

2 · 5 + 7 = y.

y = 10 + 7

y = 17.

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Determine if each ratios or rates are equivalent.
maxonik [38]

Answer:

no these are not equivalent

Step-by-step explanation:

these aunt equivalent because 12+12 =24 and 3+3=6 not 7 or 28 so no ccx these are not equivalent

4 0
2 years ago
Julie brought 24 apples to school to share with her classmates. Of those apples, 2/3 are red, and the rest are green. Julie’s cl
Ratling [72]

Answer:

from the given info

you can know that there were 16 red ones. (2/3)*24

and 8 green apples

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(3/4)*16

=12

and 1/2od green

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(1/2)*8

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and now the total eaten apples

= 12+4

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and the remaining number are

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3 years ago
4=2/4u one step equation
docker41 [41]
4 = 2/4u

Multiply both sides by 4u

16u = 2

Divide both sides by 16, and simplify.

u = 1/8
3 0
2 years ago
Find the area of this figure.
Mrrafil [7]

Answer:

55 square miles

Step-by-step explanation:

A=7*10/2+10*4/2

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7 0
2 years ago
Does (3x+5)+5x+7=180?? and if it does what is the value of x?
Ostrovityanka [42]

Answer:  

x=21

Step-by-step explanation:

Let's solve your equation step-by-step.

3x+5+5x+7=180

Step 1: Simplify both sides of the equation.

3x+5+5x+7=180

(3x+5x)+(5+7)=180(Combine Like Terms)

8x+12=180

8x+12=180

Step 2: Subtract 12 from both sides.

8x+12−12=180−12

8x=168

Step 3: Divide both sides by 8.

8x /8 = 168 /8

x=21

brainliest please?

6 0
3 years ago
Read 2 more answers
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