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3 years ago

Please need help asap

Mathematics

1 answer:

sertanlavr [38]3 years ago

5 0

Answer:

in which class you are if you are in 7 the ans will be -3.

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What factors do 16 and 44 have in<br> common?

vodomira [7]

Answer:

1,2,4

Step-by-step explanation:

Factors for 16: 1, 2, 4, 8, and 16.

Factors for 44: 1, 2, 4, 11, 22, and 44.

5 0

3 years ago

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Simplify the expression. (16 − 9)^11 divided by [(3 + 4)^2]4

densk [106]

Do 16-9 which equals 7, then (7)^11=77 1.=77

this one add 3+4 which equals 7 then do 7^2= 49 then 4x49=196 2.=196

8 0

3 years ago

Results of a survey conducted in 15 large cities within the U.S. finds that the average commute time one way to/from work is 25.

irina1246 [14]

Answer:

We conclude that commute time in her city is less than the amount reported by the survey which is 25.4 minutes.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 25.4 minutes

Sample mean, $\bar{x}$ = 22.1 minutes

Sample size, n = 15

Alpha, α = 0.10

Sample standard deviation, s = 5.3 minutes

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 25.4\text{ minutes}\\H_A: \mu < 25.4\text{ minutes}$

We use one-tailed t(left) test to perform this hypothesis.

Formula:

$t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{s}{\sqrt{n}} }$

Putting all the values, we have

$t_{stat} = \displaystyle\frac{22.1 - 25.4}{\frac{5.3}{\sqrt{15}} } = -2.411$

Now, $t_{critical} \text{ at 0.10 level of significance, 14 degree of freedom } = -1.345$

Since,

$t_{stat} < t_{critical}$

We fail to accept the null hypothesis and reject it. We accept the alternate hypothesis.

Thus, there is enough evidence to conclude that commute time in her city is less than the amount reported by the survey which is 25.4 minutes.

7 0

4 years ago

Please help asap!! <br> :D

Natasha2012 [34]

I believe the correct answer is C - 1,152

8 0

3 years ago

To make a solution for an experiment, Gunther needs to add 40 g of a solute to 100 g of water. When making the

Tems11 [23]

Answer:

B. Heat the solution, dissolve the solute, and let the solution cool verifying nothing settled out.

Step-by-step explanation:

4 0

3 years ago

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