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3 years ago

If P(-2, 1) is rotated 90°, its image is

Mathematics

2 answers:

balu736 [363]3 years ago

7 0

Answer:

Image = (-1, -2)

Step-by-step explanation:

The rule of rotation of an object 90 degree is given by:

$(x, y) \rightarrow (-y, x)$

Given that:

If P(-2, 1) is rotated 90°

We have to find its image.

Apply the rule on P.

we have;

$P(-2, 1) \rightarrow P'(-1, -2)$

Therefore, its image is, (-1, -2)

slavikrds [6]3 years ago

6 0

The image of P(-2,1) after it is rotated 90° is (-1,-2).

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3 years ago

Read 2 more answers

Solve each triangle for the missing values shown. Show all work necessary. Use exact values

Gelneren [198K]

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$x^2+y^2=10^2 \\\\ \to x^2+5^2=10^2 \\\\ \to x^2+25=100 \\\\ \to x^2 = 100-25 \\\\ \to x^2= 75 \\\\ \to x= \sqrt{75} \\\\ \bf 5 \sqrt{3}$

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Now, use Pythagoras theorem to find b

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You can solve all of them in a similar way.

: )

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3 years ago

A baby is scheduled to have 18 vaccination shots in her first year. After 9 months , the baby has had 15 of the shots. Write and

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15+v=18
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3 years ago

Find the variation constant and an equation of variation where y varies inversely as x and y=5 when x = 15.

bezimeni [28]

y = k/x, where k is the variation constant.

We need to find k.

5 = k/15...This equation leads to the correct value of k (our variation constant).

5(15) = (k/15)(15)

75 = k

Done!

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3 years ago