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3 years ago

9

working together Alberto and Amanda can paint a fence in 4.12 hours. had she done it alone it would have taken Amanda 10 hours.

find how long it would take Alberto to do it alone.

1 answer:

nata0808 [166]3 years ago

8 0

Answer:

10 hrs

Step-by-step explanation:

4.12/2 = 2.06 hrs / person

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Graph the linear equation and answer each of the following questions. y=-2x-3 (A)What is the y-intercept?

balandron [24]

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C) This equation has a positive slope

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3 years ago

What’s the probability of getting 6 or more girls from 8 births?

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Answer:

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3 years ago

Triangle X Y Z is shown. Angle X Z Y is a right angle. Angle Z X Y is 60 degrees and angle X Y Z is 30 degrees. The length of hy

vladimir1956 [14]

Answer:

StartFraction StartRoot 3 EndRoot Over 3 EndFraction

Step-by-step explanation:

see the attached figure to better understand the problem

step 1

we know that

In the right triangle XYZ

$cos(Y)=\frac{ZY}{XY}$ ---> adjacent side divided by the hypotenuse

substitute the values

$cos(30\°)=\frac{ZY}{4}$

Remember that

$cos(30\°)=\frac{\sqrt{3}}{2}$

so

substitute

$\frac{\sqrt{3}}{2}=\frac{ZY}{4}$

$ZY=(4)\frac{\sqrt{3}}{2}$

$ZY=2\sqrt{3}\ units$

step 2

$sin(Y)=\frac{XZ}{XY}$ --> opposite side divided by the hypotenuse

substitute the values

$sin(30\°)=\frac{XZ}{4}$

Remember that

$sin(30\°)=\frac{1}{2}$

so

$\frac{1}{2}=\frac{XZ}{4}$

$XZ=2\ units$

step 3

$tan(Y)=\frac{XZ}{ZY}$ --> opposite side divided by adjacent side

substitute the values

$tan(Y)=\frac{2}{2\sqrt{3}}$

$tan(Y)=\frac{1}{\sqrt{3}}$

Simplify

$tan(Y)=\frac{\sqrt{3}}{3}$

so

StartFraction StartRoot 3 EndRoot Over 3 EndFraction

7 0

3 years ago

Read 2 more answers

Solve for x <br> 1. 6<br> 2. 4<br> 3. -5<br> 4.-10

kramer

The answer I think is 6

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2 years ago

An item is regularly priced at $45. Josh bought it on sale for 15% off the regular price.

Mariulka [41]

15/100=x/45

675=100x

6.75=x

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2 years ago