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1 year ago

Simplifyx to the -6 power_________x to the 8 powerwrite your answer with a positive exponent only

1 answer:

6 0

$\begin{gathered} \frac{x^{-6}}{x^8} \\ \text{using law of indicies} \\ x^{-6-8} \\ x^{-14} \\ \frac{1}{x^{14}} \end{gathered}$

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4 years ago

4. ADEF is an equilateral triangle. E 24 20 D F

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3 years ago

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3 years ago

identify the coordinates of four points on the line with each given slope and y-intercept. slope=-1 and that y-intercept=8

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Answer:

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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

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

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