3 years ago

Julia has correctly answered 35 questions from a test, which is 7/12 of the total. How many questions did the test have?

Mathematics

1 answer:

otez555 [7]3 years ago

4 0

Answer:

There are 60 questions on the test

Step-by-step explanation:

Hope this helps :)

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Please find the SURFACE AREA of this figure... Write the formula and plug in the values... Write your answer with units and box

sashaice [31]

Answer:

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3 years ago

Which is equivalent to the complex number i^32?

Ksivusya [100]

Answer:

where i^2 = -1 (minus one)

So, i^2 = -1

i^4 = (i^2)^2 = (-1)^2 = -1 X-1 = 1

like ;

i^32 = (i^2)^16 = (-1)^16 = -1 X -1 X-1 X -1 X-1 X -1 X-1 X -1 X-1 X -1 X-1 X -1 X-1 X -1 X-1 X -1 X

= 1

Step-by-step explanation:

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3 years ago

A study has indicated that the sample size necessary to estimate the average electricity use by residential customers of a large

Zanzabum

Answer:

$\sigma=547.1125$

Step-by-step explanation:

-The margin of error is calculated using the formula:

$ME=z_{\alpha/2}\times \frac{\sigma}{\sqrt{n}}\\\\$

-We substitute the values, n=900 and ME=30 in the formula to solve for standard deviation:

$ME=z_{\alpha/2}\times \frac{\sigma}{\sqrt{n}}\\\\\\30=1.645\times\frac{\sigma}{\sqrt{900}}\\\\\sigma=\frac{30^2}{1.645}\\\\=547.1125$

Hence, the population standard deviation is 547.1125

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3 years ago

5b-2=13 what does b equal

Alex777 [14]

5b-2=13 add 2 to both sides

5b=15 divide both sides by 5

b=3

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3 years ago

Read 2 more answers

-8 Find the slope of the line y = -8/2x+1/5 Simplify your answer and write it as a proper fraction, improper fraction, or intege

kipiarov [429]

The slope is -4.

Because:

-8/2 is -4, which is the slope.

5 0

2 years ago