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3 years ago

I NEED SERIOUS HELP!!! Find the volume of the rectangular prism The volume is __cm. Cubed

Mathematics

1 answer:

GuDViN [60]3 years ago

7 0

Answer: 88cm^2

Step-by-step explanation:

To find the answer of a rectangular prism, use this formula:

$A=2(wl+hl+hw)$

For your prism, h = 4, l = 6, and w = 2.

$A = 2(2*6+4*6+4*2)$

$A=2(12+24+8)$

Area is equal to 88 cm squared.

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Write a ratio this is equivalent to 9/27

tresset_1 [31]

9/27

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one if the ratio is 1/3

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3 years ago

Use the normal distribution and the given sample results to complete the test of the given hypotheses. Assume the results come f

AlladinOne [14]

Answer:

$z=\frac{0.64 -0.5}{\sqrt{\frac{0.5(1-0.5)}{75}}}=2.43$

Now we can calculate the p value with the following probability:

$p_v =P(z>2.43)=0.0075 \approx 0.008$

Since the p value is lower than the significance level we have enough evidence to reject the null hypothesis and we can conclude that the true proportion for this case is higher than 0.5

Step-by-step explanation:

Data given and notation

n=75 represent the random sample taken

$\hat p=0.64$ estimated proportion of interest

$p_o=0.5$ is the value that we want to test

$\alpha=0.05$ represent the significance level

Confidence=95% or 0.95

z would represent the statistic

$p_v$ represent the p value

System of hypothesis

We want to verify if the true proportion is higher than 0.5:

Null hypothesis: $p =0.5$

Alternative hypothesis: $p > 0.5$

The statistic is given by:

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

Replacing the info given we got:

$z=\frac{0.64 -0.5}{\sqrt{\frac{0.5(1-0.5)}{75}}}=2.43$

Now we can calculate the p value with the following probability:

$p_v =P(z>2.43)=0.0075 \approx 0.008$

Since the p value is lower than the significance level we have enough evidence to reject the null hypothesis and we can conclude that the true proportion for this case is higher than 0.5

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3 years ago

Lacie wants to paint her bedroom walls. She has to cover 1,162.5 square feet. About how many gallons of paint will she need?

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I dont really know. you dont know how big the walls are and how far 1 gallon goes so figure how far 1 gallon goes and then divide it by the 1,162.5

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2 years ago

Please help and show work!!

serious [3.7K]

17.

x = -2 is not a solution of -1 < x < 5 because -2 < -1 (-1 < -2 < 5 FALSE).

18.

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19.

k = 10 is not solution of 2k - 3 < 1 because:

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2 years ago

16 x 18, I double and halve

adell [148]

16*18 is 288

what do u mean by "<span>I double and halve"</span>

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3 years ago

Read 2 more answers