What is -2,1 after a rotation 180 degrees clockwise around the origin

Mathematics

2 answers:

andrew-mc [135]3 years ago

8 0

Answer:

It would be 2,-1

Step-by-step explanation:

A 180 degree clockwise rotation is (x,y) going to (-x,-y)

MakcuM [25]3 years ago

6 0

Answer:

(2,1)

Step-by-step explanation:

The point (-2,1) is in the second quadrant.

After a 180° clockwise rotation, this point becomes (2,1) and in the first quadrant.

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Question 2(Multiple Choice Worth 1 points) (06.01) Solve 2x + 5y = −13 3x − 4y = −8 (4, 1) (−4, 1) (4, −1) (−4, −1)

dlinn [17]

ANSWER

The solution is
$(-4,-1)$

EXPLANATION

The given equations are:

$2x + 5y = - 13...(1)$

and

$3x - 4y = - 8...(2)$

We multiply equation 1 by 3 to get,

$6x + 15y = - 39...(3)$

We multiply equation 2 also by 2 to get,

$6x - 8y = - 16...(4)$

We subtract equation 4 from equation 3 to get,

$23y = - 23$
This implies that,

$y = - 1$

We put this value of y into any of the equations say equation 2

$3x - 4( - 1) = - 8$
Simplify

$3x + 4 = - 8$
Group like terms
$3x = - 8 - 4$
Simplify,

$3x = - 12$

Divide both sides by 3 to get,

$x = - 4$

Therefore the solution is
$(-4,-1)$

The correct answer is option D.

3 0

4 years ago

Eight friends share 4 bunches of grapes equally. What fraction of a bunch of grapes does each friend get?

AURORKA [14]

1/2 a bunch because 8 divided by 4 = 1/2 :)

4 0

3 years ago

BRAINLIEST ANSWER (please answer)

ozzi

Answer:

0.20p + 7 = 0.30p + 5

Step-by-step explanation: