2 years ago

Please help with khan

Mathematics

2 answers:

nataly862011 [7]2 years ago

8 0

Answer:

Step-by-step explanation:

she solved it correct by subtracting 7.5 from both sides

vladimir2022 [97]2 years ago

4 0

Answer:

he made an mistake in step one

Step-by-step explanation:

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Write a numerical expression for the volume

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(L*W)*H

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3 years ago

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Pretty easy question just stuck please help ASAP

Dima020 [189]

Answer:

SA = 300 cubic yards

Step-by-step explanation:

SA = 12(5) + 8(12 + 13 + 5)

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3 years ago

Matthew scored a total of 160 points in a basketball session he scored 147 of those points in a regular season in the West were

kirza4 [7]

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3 0

3 years ago

Ian is a phycologist interested in determining the proportion of algae samples from a local rivulet that belonged to a particula

pickupchik [31]

Answer: 16590

Step-by-step explanation:

The formula we use to find the sample size is given by :-

, where p = prior estimate of population proportion.

$z^*$ = Critical z-value (Two- tailed)

E= Margin of error .

Let p be the population proportion of cyanobacteria.

Given : E = 0.01

Critical value for 99% confidence interval : $z^*=2.576$

If Ian does not want to rely on previous knowledge , then we assume p=0.5 because the largest standard error is at p=0.5.

Now, the required sample size = $n=0.5(1-0.5)(\frac{2.576}{0.01})^2$

$n=0.25(257.6)^2=0.25(66357.76)=16589.44\approx16590$

Required sample size = 16590

5 0

2 years ago

Refer to the question below:

irakobra [83]

∛(2x + 5) - 3 = 0
Add 3 to both sides
∛(2x + 5) = 3
Cube both sides
2x + 5 = 27
Subtract 5 from both sides
2x = 22
Divide both sides by 2
x=11
There's your answer. Have an awesome day! :)

7 0

3 years ago