3 years ago

How do you solve 3x-100=1x+50

1 answer:

8 0

Answer:75

Step-by-step explanation:First isolate x by getting rid of the 100 so the equation becomes 3x=x +150 then you subtract x From both sides so it’s 2x=150 then divide by two on both sides so you get X = 75

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Theo can paint a fence three times as fast as his sister can. Working together, they can paint a fence in 9 hours. How many hour

Deffense [45]

Answer:

12 hours

Step-by-step explanation:

Let Theo's siste can paint a fence in x times

Given.

Theo can paint a fence three times as fast as his sister can. Working together, they can paint a fence in 9 hours.

$\frac{1}{x}+\frac{1}{3x} =\frac{1}{9}\\\frac{3+1}{3x} =\frac{1}{9} \\\frac{4}{3x}=\frac{1}{9}$

Apply cross multiplication

$x=\frac{9\times 4}{3}\\x=\frac{36}{3} \\x=12hours$

Theo’s sister to paint the fence in 12 hours.

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3 years ago

Write a system of equations to describe the situation below, solve using elimination or substitution.

tangare [24]

X= mountain dew y= coke

-(5x+5y=1160)
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-5x-5y=-1160
+
8x+5y=1523

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3 3

x=121 g of sugar in Mt. Dew

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24+5y-24= 1523-24

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5 5

y= 299.8 grams of sugar in coke

4 0

3 years ago

Simplify the expression 2(5x-1)

MrRissso [65]

The answer is 8x I believe

4 0

3 years ago

Read 2 more answers

Referring to the figure find m∠3

kkurt [141]

Answer:

Measure of angle 3 = 30⁰