3 years ago

Ill mark brainlist plss help

Mathematics

1 answer:

Mariana [72]3 years ago

6 0

Answer:

Step-by-step explanation:

There you go bro oh yeah you're welcome

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Can you please explain how to do this and give me the answer so next time I know how to do it. Square root with -15 in it and sq

Drupady [299]

Answer:

15i and 4i

Step-by-step explanation:

i is an imaginary number also shown as $\sqrt{-1}$ .

Since we have $\sqrt{-15}$ , thats 15* $\sqrt{-1}$ . Substitute $\sqrt{-1}$ for i and we get 15*i or 15i.

We do the same for $\sqrt{-4}$ . This is 4* $\sqrt{-1}$ or 4*i or 4i.

An easy way to do this is to take the negative inside the square root like $\sqrt{-6}$ , take the absolute value -6 absolute value=6 and times it by i. So now it becomes 6i

3 0

3 years ago

A polygon has the following coordinates: A(3,1), B(5,3), C(2,5), D(-1,5), E(-4,3), F(-2,1). Find the length of DC.

nlexa [21]

To find the length of a line given two points, we are going to use the distance formula, which is defined below:

$D = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}$

( $(x_1, y_1)$ and $(x_2, y_2)$ are the two points)

The points in this problem are (2, 5) and (-1, 5). We can find the distance of DC by substituting these values into the distance formula and simplifying, as shown below:

$D = \sqrt{(-1 - 2)^2 + (5 - 5)^2$