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Eva8 [605]
3 years ago
6

3(2x^2+5)-12 for x is 3

Mathematics
1 answer:
dedylja [7]3 years ago
5 0

3(2x^2+5)-12

3(2x^2)= 6x^2

3(5) = 15

6x^2+15-12

6x^2+3

Plug in the x

6(3)^2+3

Exponent first so 3^2 is 9

6(9)+3

54+3

57 is the answer.

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Which angles are supplementary
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Answer:

∆pkl and ∆nkl

Step-by-step explanation:

Supplementary angles are two angles whose measures add up to 180° . The two angles of a linear pair , like ∠pkl and ∠nkl in the figure above, are always supplementary.

3 0
3 years ago
Suppose some country had an adult population of about 46 million, a labor-force participation rate of 75 percent, and an unemplo
Rus_ich [418]

Answer:

31.74 million people were employed.

Step-by-step explanation:

The unemployment rate is the number of unemployed people divided by the size of the labor force.

So the first step to solve this problem is finding the size of the country's labor force.

Suppose some country had an adult population of about 46 million, a labor-force participation rate of 75 percent.

So the size of the country labor force is:

0.75 * 46 million = 34.5 million people.

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This means that 100 - 8 = 92 percent of people were employed. Remembering, this considers only the labor force, of 34.5 million people. So

0.92 * 34.5 million = 31.74 million

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5 0
3 years ago
Find the angle measure of PQR
sineoko [7]

Answer:

<em>64 degrees</em>

Step-by-step explanation:

When you have the SRQ angle, you can easily solve for PQR. Luckily, we're given that QRP and PRS are 32 and 84, respectively. Adding this together gives you 116. 116*2 = 232 and 360-232 = 128, and 128/2 = 64.

<em>Please Mark Brainliest if this helps!</em>

8 0
3 years ago
Which symbol correctly compares these fractions? 13 20 ___ 7 10
fomenos
These are fractions? Like 13/20 and 7/10? Is so the symbol would be 13/20 < 7/10 because 7/10 is a higher fraction than 13/20
7 0
4 years ago
Read 2 more answers
After you prove that two triangles are congruent, what would CPCTC be useful for?
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Is useful<span> in </span>proving<span>various theorems about </span>triangles<span> and other polygons.

</span>
6 0
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