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3 years ago

Given the two sets:

Mathematics

1 answer:

svetoff [14.1K]3 years ago

8 0

Answer:

Step-by-step explanation:

B and c

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A cube has a side length of 5xcm. What is the volume of the cube?<br>no links please.

finlep [7]

Answer:

125 cm

Step-by-step explanation:

$V=lwh$

all cube has the same length, width, height

5 * 5 * 5 = 125

Hope this helps

7 0

3 years ago

Write 5 and 2/5 as a decimal

Alenkasestr [34]

Answer:

5.4.

Step-by-step explanation:

If we divide 2 by 5 we get 0.4

So 5 and 2/5 = 5.4

7 0

3 years ago

Read 2 more answers

Solve for x. 2x - 9 I - 2 16<br>i need how yo solve <br>

puteri [66]

Can you rewrite the equation? It doesn’t make sense

4 0

3 years ago

Write the equation of the line that passes through the points (-9, -3) and (-7,7).

tiny-mole [99]

Answer:

y=5x+42

Step-by-step explanation:

m=(y2-y1)/(x2-x1)

m=(7-(-3))/(-7-(-9))

m=(7+3)/(-7+9)

m=10/2

m=5

y-y1=m(x-x1)

y-(-3)=5(x-(-9))

y+3=5(x+9)

y=5x+45-3

y=5x+42

6 0

3 years ago

A company with a fleet of 150 cars found that the emissions systems of only 5 out of the 22 they tested failed to meet pollution

Ugo [173]

Answer: No, the percentage of the fleet out of compliance is not different from their initial thought.

Step-by-step explanation:

Since we have given that

n = 22

x = 5

So, $\hat{p}=\dfrac{x}{n}=\dfrac{5}{22}=0.23$

he company initially believed that 20% of the fleet was out of compliance. Is this strong evidence the percentage of the fleet out of compliance is different from their initial thought.

so, p = 0.2

Hypothesis would be

$H_0:p=\hat{p}\\\\H_a:p\neq \hat{p}$

So, the t test statistic value would be

$t=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}\\\\\\t=\dfrac{0.23-0.20}{\sqrt{\dfrac{0.2\times 0.8}{22}}}\\\\\\t=\dfrac{0.03}{0.085}\\\\t=0.353$

Degree of freedom = df = n-1 = 22-1 =23

So, t{critical value} = 2.080

So, 2.080>0.353

so, we will accept the null hypothesis.

Hence, No, the percentage of the fleet out of compliance is not different from their initial thought.

3 0

3 years ago