1 year ago

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Mathematics

1 answer:

Genrish500 [490]1 year ago

3 0

hey

$^{9807}$

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If point Q(3,-4) is rotated +270° about the origin, what are the coordinates of Q?

erica [24]

Answer:

$Q' =(-4,-3)$

Step-by-step explanation:

Given

$Q = (3,-4)$

Rotation = +270 degrees

Required

Determine the new coordinates of Q (i.e. Q')

When a point (x,y) is rotated +270° about the origin, the new coordinates is: (y,−x)

So:

$Q = (3,-4)$

Where:

$x = 3$ and $y = -4$

Q' will be:

$Q' =(-4,-3)$

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2 years ago

What value of X makes the equation true -7x - (-5-x) = -9(2x-1) -1

Bond [772]

Answer:

x = 1/4

Step-by-step explanation:

-7x - (-5-x) = -9(2x-1) -1

-7x + 5 + x = -18x + 9 - 1

combine like terms:

-6x + 5 = -18x + 8

add 18x to each side of the equation:

12x + 5 = 8

subtract 5 from each side:

12x = 3

divide both sides by 12:

x = 3/12 = 1/4

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2 years ago

How to solve this math problem

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Answer:

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Step-by-step explanation:

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3 years ago

What is the answer for 7-2(8/2)+9

photoshop1234 [79]

$7-2( \frac{8}{2} )+9 =$

Remove parentheses:

$7-2* \frac{8}{2} +9 =$

$7 - 2 * 4 + 9 =$

$7 - 8 + 9 =$

$= -1 + 9$

$= 8$

hope this helps!

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3 years ago

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Answer:

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Step-by-step explanation:

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