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3 years ago

WILL GIVE BRAINLST ANSWER PLSS

Mathematics

2 answers:

Gelneren [198K]3 years ago

3 0

The answer should be C

jeyben [28]3 years ago

3 0

Answer:

a. she did not keep the order of the points the same in numerator and the denominator

Correction:

(y1-y2)/(x1-x2)

(1-17)/(20-1)

(17-1)/(1-20)

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leva [86]

Answer:

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3 years ago

Jorge is comparing two data sets. He uses the mean and mean absolute deviation to compare the center and variability of the data

igor_vitrenko [27]

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3 years ago

ILL GIVE BRAINIEST PLEASE HELP ASAP

olganol [36]

Answer:

Step-by-step explanation:

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3 years ago

Write the expression in the form a+bi.<br> √ -4 - √144

Lesechka [4]

Answer:

-12 + 2i

Step-by-step explanation:

$\sqrt{ - 4} - \sqrt{144} \\ \\ = \sqrt{ - 1 \times 4} - \sqrt{144} \\ \\ = \sqrt{ - 1} \times \sqrt{4} - \sqrt{144} \\ \\ = i \times 2 - 12 \\ \\ = - 12 + 2i \\ \implies \: a + bi$

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3 years ago

Triangle ABC has vertices at (-3, -1), (-1, 2) and (6, 1). What is the perimeter of triangle ABC, rounded to the nearest tenth?

Marta_Voda [28]

$Perimeter=19.9units$

Why?

We can find the perimeter of any triangle adding the length of its sides. Since we are given 3 points, we need to calculate the length of the three sides of the triangle, and then add them to know the perimeter of the triangle.

Let be the points:

A(-3,-1)

B(-1,2)

C(6,1)

<h3>- Distances</h3>

From A to B:

$d(A,B)=\sqrt{(-1-(-3))^{2}+(2-(-1)^{2}}\\\\d(A,B)=\sqrt{(2)^{2}+(3)^{2}}=\sqrt{4+9}=3.61units$

From A to C:

$d(A,C)=\sqrt{6-(-3))^{2}+(1-(-1)^{2}}\\\\d(A,B)=\sqrt{(9)^{2}+(2)^{2}}=\sqrt{81+4}=9.22units$

From B to C:

$d(B,C)=\sqrt{6-(-1))^{2}+(1-2)^{2}}\\\\d(A,B)=\sqrt{(7)^{2}+(-1)^{2}}=\sqrt{49+1}=7.07units$

Now, calculating the perimeter, we have:

$Perimeter=d(A,B)+d(A,C)+d(B,C)=3.61units+9.22units+7.07units\\\\Perimeter=19.9units$

Have a nice day!

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3 years ago