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2 years ago

What are the coordinates of vertex J of the pre-image?(14 POINTS. PLS HELP, GEOMETRY)

Mathematics

2 answers:

LUCKY_DIMON [66]2 years ago

6 0

If quadrilateral JKLM was dilated with scale factor 1/2 and center of dilation at origin to form quadrilateral J'K'L'M', then when you dilate quadrilateral J'K'L'M' with scale factor 2 and center of dilation at origin, you obtain quadrilateral JKLM.

The coordinates of quadrilateral J'K'L'M' are:

J'(0,-2), K'(3,2), L'(6,-2) and M'(3,-6).

Then the coordinates of quadrilateral JKLM are:

J(0,-4), K(6,4), L(12,-4) and M(6,-12).

Answer: correct choice is A: J(0,-4).

DaniilM [7]2 years ago

5 0

If we look at where it is now, we would have multiplied the x and y values by 1/2. since we are working backwards, lets multiply by 2 instead...giving us the vertex for the pre-image....

J is now (0, -2) multiply by 2
J was (0, -4)

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In ΔEFG, the measure of ∠G=90°, GF = 33, FE = 65, and EG = 56. What ratio represents the sine of ∠F?

gizmo_the_mogwai [7]

<h3>Answer: 56/65</h3>

Work Shown:

sin(angle) = opposite/hypotenuse

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2 years ago

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Hoochie [10]

Given :

For the school's sports day, a group of students prepared 12 1/2 litres of lemonade. At the end of the day they had 2 5/8 litres left over.

To Find :

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Alekssandra [29.7K]

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Step-by-step explanation:

Given,

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Decrease percent = $\frac{Change}{Old\ value}*100$

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Decrease percent = 75%

There is 75% decrease.

Keywords: division, subtraction

Learn more about subtraction at:

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