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3 years ago

What is the square root of -1

Mathematics

1 answer:

MAXImum [283]3 years ago

5 0

Answer:

Step-by-step explanation:

$\sqrt{-1}$ is the same thing as i, which is an imaginary number.

Since you can't take the square root of negative numbers, we use i to do it.

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Can someone help me with 19 and 20 plsss

SCORPION-xisa [38]

20. $158, 400 - multiply 40 by 22 to get the total square footage(880), then multiply 880 by 15 to get they total for the month, which is 13,200. lastly, you take 13,200 multiplied by 12(for each month in a year), and you get $157,400.

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2 years ago

A right triangle has a side with length 12 in and a hypotenuse with length 20 in. find the length of the missing leg. (round to

OLEGan [10]

Let the unknown side be "z" inches
Through pythagoras:
${12}^{2} + {z}^{2} = {20}^{2}$
Because the square of the two sides add up to the square of the hypotenuse in a right triangle.

This means that
${z }^{2} = {20}^{2} - {12}^{2}$
${z}^{2} = 400 - 144 = 256$
$z = \sqrt{256} = 16$
So the missing side is 16 inches

Hope this helped

6 0

3 years ago

San<br> R<br> APOR is a right triangle. IF RO = 8, what is PO?<br> mios<br> 16

attashe74 [19]

Answer:

PQ = 16

Step-by-step explanation:

Using the cosine ratio in the right triangle and the exact value

cos60° = $\frac{1}{2}$ , then

cos60° = $\frac{adjacent}{hypotenuse}$ = $\frac{RQ}{PQ}$ = $\frac{8}{PQ}$ = $\frac{1}{2}$ ( cross- multiply )

PQ = 8 × 2 = 16

6 0

2 years ago

You start driving west for 3 miles, turn right, and drive north for another 11 miles. At

vesna_86 [32]

14 miles Substitute AB = 3 and BC = 11 in above equation.

6 0

2 years ago

Read 2 more answers

How does making a frequency table or line plot help you see which value occurs most often in a data set?

klemol [59]

Answer:

A frequency table and a line plot show which value occurs most often. this is done by labeling every value. The person can clearly see the organized layedout numbers in a frequency table or line plot.

Step-by-step explanation:

If you have any questions feel free to ask in the comments.

4 0

2 years ago