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Nadya [2.5K]
4 years ago
15

Find f(-3), f(-1), and f(1)

Mathematics
1 answer:
suter [353]4 years ago
3 0

Answer:

I will just show you how to substitute.

Step-by-step explanation:

all you have to do is just plug f(x) into the number you want. So if you see any x's, all you gotta do is plug that number after f for x.

So an example of an equation for one of your number is:

f\left(x\right)=x^2+x

you then want to plug the number after f for the x's. (I'm doing f(-3).

f\left(-3\right)=\left(-3\right)^2-3

You then should get the equation above.

after that you solve.

f\left(-3\right)=9-3

f\left(-3\right)=6

just follow these steps and you should be fine :))

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What is (3y)/(2y)<=1
gregori [183]

Answer:

Step-by-step explanation:

Simplifying

3y + -2y = 1

Combine like terms: 3y + -2y = 1y

1y = 1

Solving

1y = 1

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Divide each side by '1'.

y = 1

Simplifying

y = 1

4 0
3 years ago
The area of a field shaped like a right triangle is 750yd^2.One leg of the field is fenced with wood costing $5/yd. the remainde
Elenna [48]
Assume that
 a and b = the two legs of the right triangle. 
 c =  the hypotenuse.

The area of the right triangle is 750 yd², therefore
(1/2)*a*b = 750
ab = 1500               (1)

The perimeter is 150yd, therefore
a + b + c = 150         (2)

Let the side fenced with wood be a, at $5/yd.  Sides b and c are fenced with steel at $10/y. The total cost is $1200, therefore
 5a + 10b + 10c = 1200            
or
a + 2b + 2c = 240         (3)

From (2), obtain 
c = 150 - a - b              (4)

Substitute (4) into (3)
a + 2b + 2(150 - a - b) = 240
-a + 300 = 240
a = 60

From (1), obtain
60b = 1500
b = 25

From (4), obtain
c = 150 - 60 - 25 = 65

Answer:
A. The length of the leg fenced with wood is 60 yd.
B.  The length of the leg fenced with steel is 25 yd.


5 0
4 years ago
Find the value of x.<br> PLEASE HELP ASAP!!!!!!
Anarel [89]

Answer:

does it want the degree????

7 0
3 years ago
The area of a square is 64 square feet. Each side of the square has a measure of feet.
Pie
Each side of the square is 16 ft
4 0
3 years ago
Need help with this problem​
Arisa [49]

Answer:

1/4

Step-by-step explanation:

take the negative reciprocal when finding the slope of a perpendicular line.

So, -4 can be written as -4/1

flip it to make -1/4

and remove the negative to make 1/4

6 0
3 years ago
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