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2 years ago

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A ladder is sliding down a wall so that the distance between the top of the ladder and the floor is decreasing at a rate of 9 fe

et per second. How fast is the base of the ladder receding from the wall?

1 answer:

bixtya [17]2 years ago

4 0

Use Pythagorean theorm

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Tanya [424]

Sin C = AB / AC
We have AC. We need to calculate AB

ABC is a right triangle. Therefore, AC² = AB²+BC²
82² = AB ² + 80² => AB² = 82² - 80²
AB = 18

Sin C = 18/82 = 9/41

Good luck

4 0

2 years ago

Read 2 more answers

3x+30+x=10+2x+5x+2 <br> i need help fast

kupik [55]

Answer:

x=6

Step-by-step explanation:

Group Like Terms:

3x+x+30=10+2x+5x+2

Add similar elements 3x+x=4x:

4x+30=10+2x+5x+2

Add similar elements 2x+5x=7x:

4x+30=10+7x+2

Group like terms:

4x+30=7x+10+2

Add the numbers 10+2=12:

4x+30=7x+12

Subtract 30 from both sides:

4x+30-30=7x+12-30

Simplify:

4x=7x-18

Subtract 7x from both sides:

4x-7x=7x-18-7x

Simplify:

-3x=-18

Divide both sides by -3:

$\frac{-3x}{-3} =\frac{-18}{-3}$

Simplify:

x=6

Hence, the correct answer is 6

4 0

1 year ago

If m RQ = 118°,<br> then T = _____ degrees<br> S = ______ degrees

Sati [7]

59 degrees t and s are the same because they share an arch and angle is half of the circle length 118/2=59

8 0

2 years ago

Read 2 more answers

Assume that when adults with smartphones are randomly selected, 57% use them in meetings or classes. If 8 adult smartphone use

vovikov84 [41]

Answer:

≈ 0.2526

Step-by-step explanation:

<u>The number of combinations of 4 out of 8:</u>

8C4 = 8!/(4!(8-4)!)= 8*7*6*5/(1*2*3*4)= 70

<u>Success factor is: </u>

57% = 0.57

<u>and failure factor is: </u>

(100 - 57)%= 43%= 0.43

<u>Probability:</u>

0.57⁴*0.43⁴*70 ≈ 0.2526

6 0

2 years ago

What is the product?<br><br> One-eighth times three-elevenths

Nastasia [14]

Answer:

3/88

Step-by-step explanation:

when multiplying fractions, you can just multiply across. make sure to simplify!

7 0

2 years ago