3 years ago

Solve. 20 -5r = 20 - 57 A. 1 B. 5 C no solution D. all real numbers o

Mathematics

2 answers:

marshall27 [118]3 years ago

7 0

Answer:

AGGHHHH IM SO LATE!!!!!!

the answer is C

trapecia [35]3 years ago

4 0

The answer is 11.4... so I’m not 110% because of your answer choose

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3 years ago

Part of the proceeds from a garage sale was $470 worth of $10 and $20 bills. If there were 14 more $10 bills than $20 bills, fin

Brums [2.3K]

There are 25 $10 bills and 11 $20 bills.

Step-by-step explanation:

Given,

Worth of proceeds from garage = $470

Let,

x be the number of $10 bills

y be the number of $20 bills.

According to given situation;

10x+20y=470 Eqn 1

x = y+14 Eqn 2

Putting value of x from Eqn 2 in Eqn 1

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Dividing both sides by 30

$\frac{30y}{30}=\frac{330}{30}\\y=11$

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There are 25 $10 bills and 11 $20 bills.

Keywords: linear equation, substitution method

Learn more about linear equations at:

#LearnwithBrainly

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