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3 years ago

Last one i swear, i'll give brainliest :)

Mathematics

1 answer:

svlad2 [7]3 years ago

3 0

Answer:

95% since 19÷20 is 0.95 which multiplied by hundred is 95

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Find the circumference of the circle. <br> A. 11 cm<br> B. 44 cm<br> C. 22 cm<br> D. 33 cm

ira [324]

Answer:

The answer is 44 cm .

which is (B)

5 0

3 years ago

The value of a gold coin picturing the head of the Roman Emperor Vespasian is increasing at the rate of 5% per year. If the coin

bazaltina [42]

Answer:

255.75

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Which answers the graph ?

s344n2d4d5 [400]

$y+2\leq-\dfrac{2}{3}+4\ \ \ |-2\\\\y\leq-\dfrac{2}{3}x+2$

Answer: B. Graph B

4 0

3 years ago

In 2014, the population of China was 1.39 billion. Compare China’s 2014 population to the world population with a ratio. Write y

pychu [463]

Answer:

Faction of population = 1.39 / 7.2

Percentage of population = 19.3% (Approx.)

Step-by-step explanation:

Given:

China's population in 2014 = 1.39 billion (Approximately)

Find:

Compare China's population to world population

Computation:

World's population in 2014 = 7.2 billion (Approximately)

Faction of population = China's population in 2014 / World's population in 2014

Faction of population = 1.39 / 7.2

Percentage of population = [China's population in 2014 / World's population in 2014]100

Percentage of population = [1.39/7.2]100

Percentage of population = [0.193]100

Percentage of population = 19.3% (Approx.)

6 0

3 years ago

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