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Liono4ka [1.6K]

3 years ago

10

Jane and her sister Laurie are painting a garage. Julie can paint the garage in 7 hours and Lauren can paint the garage in 10 ho

urs. About how long will it take the sisters to paint the garage if they worked together?

1 answer:

stepan [7]3 years ago

5 0

Answer:

17 hours

Step-by-step explanation:

Because 10+7 is 17 so that is your answer

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Which system of equations can be used to solve for the point of intersection of the lines on the graph? A) y = x - 7; y = 2x + 2

ratelena [41]

Answer:

C) y = 2x + 7; y = 2x + 2

Step-by-step explanation:

The two lines are parallel and so will have the same slope.

From the graph, the slope of both lines are two.

Using slope intercept formula, y=mx+c, with m=2, we have y=2x+c

The blue line has a y-intercept of 2 so the equation is

$y = 2x + 2$

The red line has a y-intercept of -7 so the equation is

$y = 2x - 7$

Hence the system is

y=2x+2

y=2x-7

The correct answer is C

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3 years ago

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Answer:

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2 years ago

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VikaD [51]

Answer:

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Step-by-step explanation:

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2 years ago

If x^2=y^2+z^2<br><br> what does x equal?

Zepler [3.9K]

Answer:

$\displaystyle x = \sqrt{y^2 + z^2}$

General Formulas and Concepts:

<u>Pre-Algebra</u>

Equality Property

<u>Algebra i</u>

Terms/Coefficients

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

$\displaystyle x^2 = y^2 + z^2$

<u>Step 2: Solve for </u><em><u>x</u></em>

[Equality Property] Square root both sides: $\displaystyle x = \sqrt{y^2 + z^2}$

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2 years ago