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kozerog [31]
3 years ago
7

What is the answer for 3r+8=2r+12

Mathematics
2 answers:
Marina86 [1]3 years ago
6 0

Answer:

r=4

Step-by-step explanation:

Nastasia [14]3 years ago
6 0

Answer:

r = 4

Step-by-step explanation:

3r+8=2r+12

Subtract 2r from each side

3r-2r+8=2r-2r+12

r+8 = 12

Subtract 8 from each side

r +8-8 = 12-8

r = 4

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A right triangle has a hypotenuse of length 99 inches. if one angle is 34 degrees34°​, find the length of each leg.
Andreyy89
Sine (34) = opposite / 99
opposite side = .55919 * 99
opposite side = <span> <span> <span> 55.35981 </span> </span> </span>

Adjacent side² = 99² - 55.35981²
Adjacent side² = <span> <span> </span></span> <span> <span> <span> 9,801  </span> </span> </span> -<span><span><span>3,064.7085632361 </span> </span> </span>
<span><span><span>Adjacent side² = 6,736.29 </span> </span> </span>
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5 0
3 years ago
What is the mean of this data set? {6, 11, 5, 2, 7} Enter your answer as a decimal in the box.
Elenna [48]

Answer:

The mean is 6.2.

Step-by-step explanation:

The "mean" is the same thing as the "average". Essentially, the question is asking for the average of the numbers.

So:

Add up all of the terms. [6 + 11 + 5 + 2 + 7] = 31

You find the average by dividing the sum of the terms (31) by the number of terms (5).

31/5 = 6.2

The mean is 6.2.

I hope this helped! :)

4 0
2 years ago
The system of equations has 2x-y=2(x+1) y=-2
sleet_krkn [62]

Answer:

A.

Step-by-step explanation:

This equation has no solution.

3 0
3 years ago
One half X +13 equals nine
NeTakaya
\frac{1}{2}x+13=9
\frac{1}{2}x=9-13
\frac{1}{2}x=-4
x=-4*2
x=-8
Answer: x=-8
5 0
3 years ago
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mezya [45]
-5 as that you would have to count that places to the left. You end decimal would have to be between 1 and 10, so it would not count the 8. I'm sorry if my explanation is not good, but that is the right answer
3 0
3 years ago
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