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2 years ago

TAKE A SNIPER TAKE A SHOT TAKE THESE POINTS.

Mathematics

1 answer:

gulaghasi [49]2 years ago

7 0

Answer:

1.5

Step-by-step explanation:

(6,-4)*1.5=(9,-6)

(2,-8)*1.5=(3,-12)

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Will mark brainliest. Step-by-step please. Thank you very much.

Naily [24]

Answer:

133°

Step-by-step explanation:

angles on a straight line = 180°

180 - 144 = 36°

angles in a triangle = 180°

36 + 31 = 67

180 - 67 = 113

answer = 113°

3 0

2 years ago

Simplify (-4-8i)-(-1-3i)

AfilCa [17]

3 - 2i is the answer .

8 0

3 years ago

Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.

zhannawk [14.2K]

Answer:

y=27;y=−42

Step-by-step explanation:

33−y=6;63+y=21

y=27;y=−42

I hope this helps!

3 0

3 years ago

Read 2 more answers

Convert the Cartesian equation (x 2 + y 2)2 = 4(x 2 - y 2) to a polar equation.

SashulF [63]

ANSWER

${r}^{2} = 4 \cos2\theta$

EXPLANATION

The Cartesian equation is

${( {x}^{2} + {y}^{2} )}^{2} = 4( {x}^{2} - {y}^{2} )$

We substitute

$x = r \cos( \theta)$

$y = r \sin( \theta)$

and

${x}^{2} + {y}^{2} = {r}^{2}$

This implies that

${( {r}^{2} )}^{2} = 4(( { r \cos\theta) }^{2} - {(r \sin\theta) }^{2} )$

Let us evaluate the exponents to get:

${r}^{4} = 4({ {r}^{2} \cos^{2}\theta } - {r}^{2} \sin^{2}\theta)$

Factor the RHS to get:

${r}^{4} = 4{r}^{2} ({ \cos^{2}\theta } - \sin^{2}\theta)$

Divide through by r²

${r}^{2} = 4 ({ \cos^{2}\theta } - \sin^{2}\theta)$

Apply the double angle identity

$\cos^{2}\theta -\sin^{2}\theta= \cos(2 \theta)$

The polar equation then becomes:

${r}^{2} = 4 \cos2\theta$

7 0

3 years ago

K2-4K-21. How do you factor this

alexira [117]

Assuming yo mean
k²-4k-21

factor by doing
what 2 numbers multipily to get -21 and add to get -4?
-7 and 3

(k-7)(k+3) is factored

4 0

3 years ago