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3 years ago

9

what is the answer to number one? I have no clue and it is my first grade I really don’t want to fail please only told me if you

know for sure

1 answer:

Bezzdna [24]3 years ago

4 0

Step-by-step explanation:

a polynomial has two or more terms and cannot have a variable in the denominator. so the answer is B and C

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X is normally distributed with mean 250 and standard deviation 40. what value of x does only the top 15% exceed?

lubasha [3.4K]

The top 15% (85th percentile) is the cutoff value $x$ such that

$\mathbb P(X\le x)=\mathbb P\left(\dfrac{X-250}{40}\le\dfrac{x-250}{40}\right)=\mathbb P(Z\le z)=0.85$

where $z$ is the corresponding cutoff for the standardized normal distribution. We have $z\approx1.0364$ , and so

$\dfrac{x-250}{40}=z\implies x\approx291.456$

3 0

3 years ago

Simplify (x2 16)(x2-16)? <br><br> A. x4- 256<br><br> B. x256 <br><br> C. x432 <br><br> D. x4-32

tiny-mole [99]

(x² + 16)(x² - 16)
= (x²)² - 16²
= x⁴ - 256

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3 years ago

Hillside Elementary ordered 40 pizzas for

Whitepunk [10]

Answer:

28 pizzas eaten

Step-by-step explanation:

1) estimate each number, i will take 3 1/4 as 3

5 3/4 as 6

and

2 3/4 as 3

2) combine the total number of pizzas left over:

3+6+3=12

subtract the number of pizzas left over from the total ordered:

40-12=28

6 0

3 years ago

Solve the equation -10X +1 + 7X = 37

Leya [2.2K]

Answer:

X = -12

Step-by-step explanation:

-10X + 1 +7X = 37

-10X + 7X + 1 = 37 {Add the like terms}

-3X + 1 = 37 {Subtract 1 form both sides}

-3X + 1 -1 = 37 -1

-3X = 36 {Divide both sides by (-3)}

$\frac{-3x}{-3}=\frac{36}{-3}\\\\$

X = -12

4 0

3 years ago

15 points and brainliest!<br><br> What is the solution for -10 -1<br> x > -19

melomori [17]

Answer:

x=-11

Step-by-step explanation:

8 0

3 years ago