3 years ago

consider the cube shown below identify the two dimensioal shape of the cross section if the cube is sliced horizontally

Mathematics

1 answer:

AnnyKZ [126]3 years ago

4 0

Wassup bro how you doing

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If f(x) = (4x-3)^2, then f(-2)=? A: -121 B: -22 C: 22 D: 25 E: 121

SOVA2 [1]

The answer is E. 121.

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3 years ago

Find what % of 70 is 12

marshall27 [118]

Answer:

Percentage Calculator: 12 is what percent of 70? = 17.14.

Step-by-step explanation:

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2 years ago

What is he value of 7 in 506,087

daser333 [38]

The value of 7 is 7 because it is in the ones place

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3 years ago

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Math SAT: Suppose the national mean SAT score in mathematics was 510. In a random sample of 50 graduates from Stevens High, the

sukhopar [10]

Answer:

Mean SAT score for Stevens High graduates are not the same as the national average.

Step-by-step explanation:

We are given the following information in question:

Population mean, μ = 510

Sample mean, $\bar{x}$ = 501

Sample size, n = 50

Alpha, α = 0.10

Sample standard deviation, s = 30

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 510\\H_A: \mu \neq 510$

We use Two-tailed t test to perform this hypothesis.

Formula:

$t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n-1}} }$ Putting all the values, we have,

$t_{stat} = \displaystyle\frac{501 - 510}{\frac{30}{\sqrt{49}} } = -2.1$ Now,

$t_{critical} \text{ at 0.10 level of significance, 49 degree of freedom } = \pm 1.6765$ Since,

$t_{stat} < t_{critical}$

We reject the null hypothesis and fail to accept it.

We accept the alternate hypothesis and mean SAT score for Stevens High graduates are not the same as the national average.

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3 years ago

Solve if x is 3. 91+x raise to power2

Triss [41]

X=3
91 + x^2
91 + 3^2
91 + 9
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4 years ago

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