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3 years ago

13

A 20 foot long flag pool casts a 8 foot long shadow. At the same time the oak tree casts a 12 foot shadow. How tall is Is the oa

k tree?

1 answer:

Orlov [11]3 years ago

3 0

It depends on where the sun is but the answer is 22 but my math could be wrong

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My friends students were wondering what 105 times what Equuleus 210

Softa [21]

2 multiplied by 105 equals 210 <span />

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3 years ago

What is another way to write 30*1200

levacccp [35]

I would honestly put, "1200*30" lol

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3 years ago

Write forty and eight tenths as a decimal. 48.1 40.8 40.08 40.008

tankabanditka [31]

Fourty and eight tenths as a decimals is 40.8. More than one pounds behind decimal is too much and a different number other than 8 is wrong. The answer is B: 40.8.

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3 years ago

Read 2 more answers

9.20 Divide it by 100 and write the product in expanded form

DedPeter [7]

565666666765665657557 is the answer or maybe it’s 6 sorry if it’s wrong

4 0

3 years ago

You want to test your newly created Web site, so you have 250 people access it from random locations at random times. Of the peo

Arte-miy333 [17]

Answer: 505

Step-by-step explanation:

The formula to find the sample size n , if the prior estimate of the population proportion (p) is known:

$n= p(1-p)(\dfrac{z}{E})^2$ , where E= margin of error and z = Critical z-value.

Let p be the population proportion of crashes.

Prior sample size = 250

No. of people experience computer crashes = 75

Prior proportion of crashes $p=\dfrac{75}{250}=0.3$

E= 0.04

From z-table , the z-value corresponding to 95% confidence interval = z=1.96

Required sample size will be :

$n=0.3(1-0.3)(\dfrac{1.96}{0.04})^2$ (Substitute all the values in the above formula)

$n= (0.21)(49)^2= 0.21\times2401$

$n= 504.21\approx505$ (Rounded to the next integer.)

∴ Required sample size = 505

6 0

3 years ago