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2 years ago

10

In the right triangle PQR, sin P = 0.8. what is the legth of RP?

1 answer:

nadezda [96]2 years ago

8 0

PR is 10.

Sine is the ratio of the side opposite an angle to the hypotenuse. 0.8 is read as "eight tenths," so this would be 8/10. We generally denote a right triangle using the letter of the right angle in the middle, so we will assume that Q is the right angle. This means that PR is the hypotenuse. Since sine = opposite/hypotenuse, sine = 8/10 means that the hypotenuse is 10.

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3 years ago

Read 2 more answers

Which algebraic representation shows a reduction?

Grace [21]

Answer:

D. (x, y) → $(\frac{1}{2}x,\frac{1}{2}y)$

Step-by-step explanation:

A dilation is a transformation which reproduces an image of the same shape as the original, but might be of a different size.

When the dilation produces a smaller image is called a reduction.

Mathematically, a reduction occurs whenever the scale factor is between 0 and 1.

Out of the options, the only one that has a scale factor less than one is:

(x, y) → $(\frac{1}{2}x,\frac{1}{2}y)$

Since the scale factor is 1/2 which is less than 1.

All other options are not reductions.

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3 years ago

Rose writes down all of her math quiz scores. Her math scores are 98,78,84, and 96. What is the mean of her math quiz scores?

KATRIN_1 [288]

Answer:

89

Step-by-step explanation:

Hi, there to find the mean

you need add the numbers and count how many numbers are there and divide

In this case 98+78+84+96= 356

Now we will count

there are 4 numbers

$\frac{356}{4}$ = 89

Your mean will be 89

If you ever have trouble with mean remember this

Mean $\frac{SumofDataPoints}{NumberofDataPoints }$

well it is supposed to be:

Sum of Data Points/Number of Data Points

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