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3 years ago

8. Simplify this expression. (5)–5(5)7 (1 point)

Mathematics

2 answers:

rjkz [21]3 years ago

3 0

The answer to this is -170

Vsevolod [243]3 years ago

3 0

Answer:

25 is the answer

Step-by-step explanation:

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Last year, 50% of MNM. Inc. employees were female. It is believed that there has been a reduction in the percentage of females i

Serhud [2]

Answer:

We conclude that there has been a significant reduction in the proportion of females.

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 400

p = 50% = 0.5

Alpha, α = 0.05

Number of women, x = 118

First, we design the null and the alternate hypothesis

$H_{0}: p = 0.50\\H_A: p < 0.50$

This is a one-tailed test.

Formula:

$\hat{p} = \dfrac{x}{n} = \dfrac{118}{400} = 0.45$

$z = \dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}$

Putting the values, we get,

$z = \displaystyle\frac{0.45-0.50}{\sqrt{\frac{0.50(1-0.50)}{400}}} = -2$

Now, we calculate the critical value.

Now, $z_{critical} \text{ at 0.05 level of significance } = -1.645$

Since the calculated z-statistic is less than the critical value, we fail to accept the null hypothesis and reject it. We accept the alternate hypothesis.

Thus, there has been a significant reduction in the proportion of females.

3 0

3 years ago

The slope of the line whose equation is x = 6 is. <br>no slope <br>6 <br>о

Ilia_Sergeevich [38]

Answer:

undefined : No slope

Step-by-step explanation:

undefined : No slope

7 0

3 years ago

Pls HELP ME ‼️ <br> help help help

kumpel [21]

Answer:

c is the answer pi/9

Step-by-step explanation:so we have from 1 to 6.28

so 3.14 is there

3 is there

pi/9 is about 1/3 or less than 1 so not in between

pi squared/9 is about 9.something/9 so more than 1 over 1 and in between

7 0

3 years ago

Marcus is 5 524 feet tall. Ben is 5 516 feet tall. Which of the two boys is taller? Give your answer and complete the justificat

Sedbober [7]

Complete Question

Marcus is 5 5/24 feet tall. Ben is 5 5/16 feet tall. Which of the two boys is taller? Give your answer and complete the justification using decimal representations of the mixed numbers. Round decimal entries to four decimal places. (select) is taller because > .

Answer:

Of the two boys, Ben is taller

Step-by-step explanation:

For Marcus

Converting to decimal

5 5/24 feet tall = 5.2083 feet tall

For Ben

5 5/16 feet tall = 5.3125 feet tall

Hence, Of the two boys, Ben is taller

4 0

3 years ago

Westkost [7]

Answer:

simple

Step-by-step explanation:

t=b×h/2 and p= b×h

4 0

3 years ago