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3 years ago

I need the answer to 36a=15

Mathematics

1 answer:

OleMash [197]3 years ago

6 0

Answer:

15/36

Step-by-step explanation:

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The Temperature at 12 noon was 14° C above zero. If it decreases at the

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Answer:

-16

Step-by-step explanation:

you just subtract 2 each hour

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3 years ago

Suppose<br> cos(π/2−x) =3/5, cos x =4/5<br> find sin, tan, csc, sec, cot

Pani-rosa [81]

Cos (π/2 - x) = sin x = 3/5
tan x = sin x / cos x = 3/5 / 4/5 = 3/4
csc x = 1/sin x = 1 / 3/5 = 5/3
sec x = 1/cos x = 1 / 4/5 = 5/4
cot x = 1/tan x = 1 / 3/4 = 4/3.

5 0

3 years ago

After calculating the sample size needed to estimate a population proportion to within 0.05, you have been told that the maximum

Svetlanka [38]

Answer: 40000

Step-by-step explanation:

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

$n=p(1-p)(\dfrac{z_{\alpha/2}}{E})^2$ , where p is the prior estimate of the population proportion.

Here we can see that the sample size is inversely proportion withe square of margin of error.

i.e. $n\ \alpha\ \dfrac{1}{E^2}$

By the equation inverse variation, we have

$n_1E_1^2=n_2E_2^2$

Given : $E_1=0.05$ $n_1=1000$

$E_2=0.025$

Then, we have

$(1000)(0.05)^2=n_2(0.025)^2\\\\\Rightarrow\ 2.5=0.000625n_2\\\\\Rightarrow\ n_2=\dfrac{2.5}{0.000625}=4000$

Hence, the sample size will now have to be 4000.

6 0

3 years ago

PLEASE HELP !!!! (Number 10 )

givi [52]

Answer:

The answer is -7, or x = -7.

6 0

3 years ago

What is the value of x?

ser-zykov [4K]

X = 20

Isolate the variable by dividing each side by factors that don't contain the variable.
x
=
20

7 0

3 years ago

Read 2 more answers