Which expression is equivalent to x4 12x2 36?

Me. Krogman usually prices the umbrellas in his store at $8 each. However, on rainy days he increases the price by 75%. How much

9966 [12]

Answer:

6 plus dollars

so 14 dollars

Step-by-step explanation:

5 0

3 years ago

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A child's tent can be modeled as a pyramid with a square base whose sides measure 60 inches and whose height measures 84 inches.

IgorC [24]

Answer:

The volume of the tent is $100,800\ in^{3}$

Step-by-step explanation:

we know that

The volume of the square pyramid (child's tent) is equal to

$V=\frac{1}{3}b^{2}h$

we have

$b=60\ in$

$h=84\ in$

substitute

$V=\frac{1}{3}(60^{2})(84)=100,800\ in^{3}$

5 0

3 years ago

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Please tell me the right answer.

Komok [63]

Answer:

b

Step-by-step explanation:

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3 years ago

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A researcher claims that the variation in the salaries of elementary school teachers is greater than the variation in the salari

guajiro [1.7K]

Answer:

a

The null hypothesis is $H_o : \sigma^2_1 = \sigma^2 _2$

The alternative hypothesis is $H_a : \sigma_1 ^2 > \sigma^2_2$

b

$F_{critical} = 1.8608$

c

$F = 2.9085$

d

The decision rule is

Reject the null hypothesis

e

There is sufficient evidence to support the researchers claim

Step-by-step explanation:

From the question we are told that

The first sample size is $n_1 = 30$

The sample variance for elementary school is $s^2_1 = 8324$

The second sample size is $n_2 = 30$

The sample variance for the secondary school is $s^2_2 = 2862$

The significance level is $\alpha = 0.05$

The null hypothesis is $H_o : \sigma^2_1 = \sigma^2 _2$

The alternative hypothesis is $H_a : \sigma_1 ^2 > \sigma^2_2$

Generally from the F statistics table the critical value of $\alpha = 0.05$ at first and second degree of freedom $df_1 = n_1 - 1 = 30 - 1 = 29$ and $df_2 = n_2 - 1 = 30 - 1 = 29$ is

$F_{critical} = 1.8608$

Generally the test statistics is mathematically represented as

$F = \frac{s_1^2 }{s_2^2}$

=> $F = \frac{8324 }{2862}$

=> $F = 2.9085$

Generally from the value obtained we see that $F > F_{critical }$ Hence

The decision rule is

Reject the null hypothesis

The conclusion is

There is sufficient evidence to support the researchers claim

4 0

3 years ago

The lengths of two sides of a triangle are 14 inches and 4 inches. Which of the following dimensions is the third side of this t

Varvara68 [4.7K]

The correct answer is A) 10 inches...Brainliest?...

3 0

4 years ago

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