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3 years ago

What is the simplified form of the following expression?

Mathematics

2 answers:

Degger [83]3 years ago

4 0

Answer:

its C

Step-by-step explanation:

I took the test

Nimfa-mama [501]3 years ago

4 0

Answer: It’s C

Step-by-step explanation:

On edge

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Two of the golf scores at the local tournament were unreadable, but the mean score was 85 and the lowest score was 75. if the re

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Step-by-step explanation:

Assuming the readable scores are:

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We know the mean (or average) is 85, so:

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3 years ago

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4 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

$10(y+14)+20y=470\\10y+140+20y=470\\30y=470-140\\30y=330$

Dividing both sides by 30

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

Putting y=11 in Eqn 2

$x=11+14\\x=25$

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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3 years ago