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2 years ago

What is the absolute value of -13

Mathematics

2 answers:

dalvyx [7]2 years ago

6 0

It would be positive 13. Even if its negative or positive it will always be positive. For example, |-7|= 7 |7|=7

MrRissso [65]2 years ago

5 0

Answer:

Step-by-step explanation:

An absolute value measures the distance of that number from zero.

For example, in this case, both the number 13 and -13 have an absolute value of 13 because both of them are 13 spaces away from zero, simply in different directions.

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2 years ago

Please solve the following sum or difference identity.

xxTIMURxx [149]

Answer:

$sin(A - B) = \frac{4}{5}$

Step-by-step explanation:

Given:

$sin(A) = \frac{24}{25}$

$sin(B) = -\frac{4}{5}$

Need:

$sin(A - B)$

First, let's look at the identities:

sum: $sin(A + B) = sinAcosB + cosAsinB$

difference: $sin(A - B) = sinAcosB - cosAsinB$

The question asks to find sin(A - B); therefore, we need to use the difference identity.

Based on the given information (value and quadrant), we can draw reference triangles to find the simplified values of A and B.

sin(A) = $\frac{24}{25}$

cos(A) = $\frac{7}{25}$

sin(B) = $-\frac{4}{5}$

cos(B) = $\frac{3}{5}$

Plug these values into the difference identity formula.

$sin(A - B) = sinAcosB - cosAsinB$

$sin(A - B) = (\frac{24}{25})(\frac{3}{5}) - (-\frac{4}{5})(\frac{7}{25})$

Multiply.

$sin(A - B) = (\frac{72}{125}) + (\frac{28}{125})$

Add.

$sin(A - B) = \frac{4}{5}$

This is your answer.

Hope this helps!

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2 years ago

Read 2 more answers

Why can't the input value be negative?

ddd [48]

If you are working with time or days, you can't put in a negative value because if you are doing an experiment, you can't go back in time to do that experiment to gather data. (Time for the most part considered to be an input value so that's why I used it as an example.)

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3 years ago

What is the absolute value of -13 ​

What is the absolute value of -13