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vichka [17]
3 years ago
8

Use the elimination method to solve the system of equations. Choose the correct ordered pair.

Mathematics
1 answer:
Nina [5.8K]3 years ago
8 0
I think the answer will be C
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If 3t - 7 = 5t, then 6t = <br> A. 21 <br> B. -7 <br> C. -21<br> D. -42
podryga [215]

Answer:

C. -21 is your answer

Step-by-step explanation:

Solve for t. Isolate the variable t in the first equation, then use the number gotten to solve the second equation.

3t - 7 = 5t

First, subtract 3t from both sides

3t (-3t) - 7 = 5t (-3t)

-7 = 5t - 3t

-7 = 2t

Isolate the variable (t). Divide 2 from both sides

(-7)/2 = (2t)/2

t = -7/2

t = -3.5

Plug in -3.5 for t in the second equation

6(t) =

6(-3.5) =

6(-3.5) = -21

C. -21 is your answer

~

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3 years ago
Find the value of x 117,145,133,140,119,125
andreev551 [17]

Answer:

here u go hope this is right

Step-by-step explanation:

x + 779 = 900

x = 900- 779

x = 121

4 0
3 years ago
Which expression is equivalent to<br> (2^3)^-5
kvasek [131]

Answer:

(2×2×2)×(2×2×2)×(2×2×2)×(2×2×2)×-(2×2×2)×(2×2×2)

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How to compare rates and ratios
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Ratios don't have to be "per" something, while rates are "per" something. 

Ratios compare 2 or more values, as well as rates. 
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A bag of potatoes weighs 2 1/2 pounds. How much would 3 1/3 bags weigh?
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The answer is 8.33333333333333333...
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