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Serhud [2]
3 years ago
12

If f (x) = x2 + 3x – 2 , find f (-2). PLEASE HELP!

Mathematics
1 answer:
stira [4]3 years ago
8 0

Answer:

f(- 2) = - 4

Step-by-step explanation:

Step-by-step explanation:

To evaluate f(- 2) substitute x = - 2 into f(x) , that is

f(- 2) = (- 2)² + 3(- 2) - 2 = 4 - 6 - 2 = - 4

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If there are 40% of girls and 250 are boys, find
oee [108]

Step-by-step answer:

If there are 40% students that are girls , and the rest are 250 boys. Then that must mean there are 60% boys. Because that is the compliment.

i)

Because we know that 60% of the people in the group are boys, and that the amount of boys amounts to 250, we can model an equation like this.

Total * 0.6 = 250.

Total = 250/0.6

Total = 417

There are 417 students

ii)

Because we know that the total amount is 417, we can find the amount of girls there are by multiplying the total by the percentage.

417 * 0.4 = 167

There are 167 students that are girls.

8 0
2 years ago
3/4 (m - 500) = 8000 + 4000
miv72 [106K]

Answer:

m= 16500

Step-by-step explanation:

You're welcome :)

8 0
4 years ago
A pair of vertical angles has measures<br> (3x + 4) and ( 73 – 9)<br> What is the value of x?
sergij07 [2.7K]

Answer:

20

Step-by-step explanation:

Vertical angles are always equal to each other. So the answer is

3x + 4 = 73 - 9                 Are you sure this is what the question is?

3x + 4 = 64                      Subtract 4 from both sides

 <u>    -4      -4</u>

3x = 60                           Divide by 3

3x/3 = 60/3

x = 20

6 0
3 years ago
I Need help now!!!!
Kisachek [45]

Answer:

The answer is B.x2/4y3n hope it helps

6 0
3 years ago
Two identical circles of radius r are inscribed in a rectangle. . a)Find the area of the rectangle as a function of r.. b)Expres
drek231 [11]
The two circles are equally inscribe inside a rectangle which means that its length is equals to the diameter of a circle and the width is two tines the diameter of a circle. 

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5 0
3 years ago
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