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3 years ago

Factor completely: x^2-81

Mathematics

1 answer:

mina [271]3 years ago

3 0

I'm not sure if this is correct but (x + 9) • (x - 9)

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Describe the error in the work below.

Amanda [17]

Answer:

use photomath brother

Step-by-step explanation:

you can find the answer like that

4 0

3 years ago

3⋅f(−4)−3⋅g(−2)= -27

Reil [10]

Answer:

3⋅f(−4)−3⋅g(−2)= -27 is g = -9/2 +2f

Graph the line using the slope and y-intercept, or two points.

Slope:

6 0

3 years ago

Please help ** revised version ** will give 13 points

hammer [34]

If each math book is 0.75 of a inch wide you would do 18 divided by 0.75= 24. 24 books width can fit into the 18 inches.

3 0

4 years ago

MARK BRAINLIEST!!!

mash [69]

Answer:

r-100

Step-by-step explanation:

R-100 R-100 R-100

7 0

3 years ago

Suppose the claim size of an auto collision insurance, X, is uniformly distributed on the interval $1,000 to $10,000. What is th

timurjin [86]

Answer:

35.35%

Step-by-step explanation:

If there were no deductibles, the expected claim payment would be:

$E(X) = \frac{10,000 +1,000}{2} \\E(X) =\$5,500$

If the collision insurance claim is under $2,000, then the insurer would not pay anything, but if X > $2,000, then the insurer would pay X - $2,000. The new expected value is:

$E_2(X)=\frac{2,000-1,000}{10,000-1,000} *0+\frac{10,000-2,000}{10,000-1,000}*\frac{(2,000-2,000)+(10,000-2,000)}{2} \\E_2(X)=\frac{8}{9}*\frac{0+8,000}{2}\\ E_2(X)=\$3,555.56$

The percentage reduction on the claim payment is:

$P=(1-\frac{E_2(X)}{E(X)})*100 \\P=(1-\frac{3,555.56}{5,500})*100\\P=35.35\%$

There was a 35.35% reduction.

8 0

3 years ago