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MrRa [10]
3 years ago
14

What are the coordinates of the point (2, −3) after a counterclockwise rotation of 90° about the origin?

Mathematics
1 answer:
lisov135 [29]3 years ago
7 0

B. (3,2) I literally just took the test. I hope this helps!

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Please. I only need help on parts A and B. Please DO NOT just answer with you don't know or something compelety random. Thanks.
Lilit [14]

Answer:    sir

Step-by-step explanation:

8 0
3 years ago
A scale drawing of a movie screen is 21 inches long and 9 inches tall. The actual screen is 30 feet tall. What is the scale of t
MatroZZZ [7]
<span>A scale factor is the ratio of two similar geometric figures of their corresponding sides. The scale factor is calculated by locating the corresponding sides on each figure. We calculate as follows:

scale factor = 9/30 = 0.3

Hope this answers the question. Have a nice day. </span>
8 0
3 years ago
△ABCis reflected to form​​ ​△A′B′C′​. The vertices of △ABC are A(3, 1), B(1, 5), and C(6, 9). The vertices of △A′B′C′ are A′(−1,
Blababa [14]

Answer:  D) reflection across y = -x

Explanation:

When we reflect over y = x, we basically swap x and y. So for instance, the point (3,1) becomes (1,3).

When reflecting over y = -x, we will do the same thing but we'll make each coordinate swap in sign from positive to negative (or vice versa). The rule for reflecting over y = -x is (x,y) \to (-y,-x)

So if we apply that rule to point A(3,1) then it becomes A ' (-1, -3).

Similarly, B(1,5) moves to B ' (-5, -1)

Finally, C(6,9) becomes C ' (-9, -6)

5 0
2 years ago
Can someone explain the steps to solve number two?
Vlada [557]
Ok so first you would create a proportion.
8/x=4/1. Next you cross multiply and divide,
1 • 8÷4=x. Ratios are fractions with the first number being the numerator and the second being the denominator. If you think of it this way, you just find an equivalent fraction. Your answer would be 8:2 because in your proportion x=2.
7 0
3 years ago
What is the slope of the line on the graph
shutvik [7]
The answer to this question is 3,3
8 0
2 years ago
Read 2 more answers
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