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melamori03 [73]
3 years ago
14

What is f(-3) for the function f(a)=-2a2-5a+4?​

Mathematics
1 answer:
Gwar [14]3 years ago
4 0

Answer:

ans is 1

Step-by-step explanation:

replace a with -3

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Solve for r.
Reika [66]

Answer:

r=-45

Step-by-step explanation:

<u>r/5=-9</u>

OUR GOAL: To isolate the variable "r" on one side...

1) Multiply both sides of the equation by 5 to get r on one side:

r=-9*5

2) Multiply:

r=-45

Let me know if you have any question

4 0
3 years ago
Read 2 more answers
In a triangle, the measure of the first angle is twice the measure of the second angle. The measure of third angle os 88 degrees
Volgvan

Answer:

Answers: 46, 23, and 111

Step-by-step explanation:

To answer, we need to know the angles. Therefore, give each angle a name. Angle 1 will be x, 2 will be y, 3 will be z. So, using this system of equations:

x=2y

z=y+88

x+y+z=180

Substituting, z = 1/2(x)+88, now plug z into the third equation:

x+1/2(x)+1/2(x)+88=180

this simplifies to 2x+88=180

subtracting 88 from both sides leaves 2x=92

x=46

plug this in to the first equation: 46 = 2y, so y = 23

plug this into the third one leaves z = 111

Hope this helps!

3 0
3 years ago
The area of a rectangle is 66 ft^2 and the length of the rectangle is 7 feet less than three times the width find the dimensions
Ber [7]
<h2>Length = 11</h2><h2>Width = 6</h2>

The area of a rectangle is 66 ft^2:

L * W = 66

Length of the rectangle is 7 feet less than three times the width:

L = 3W-7

Substitute L in terms of W:

(3W-7) * W = 66

Factorise the equation:

3W^2 -7W = 66

3W^2 - 7W - 66 = 0

Factors of 66 =

1 66, 2 33, 3 22, 6 11

(3W + 11) (W - 6) = 0

Solve for W:

3W + 11 = 0

3W = 11

W = 3/11

W - 6 = 0

W = 0 + 6

W = 6

Using the original equation, find L:

L = 3W-7

L = 3(6)-7

L = 18-7

L = 11

L * W = 66

11 * 6 = 66

4 0
3 years ago
Read 2 more answers
M minus 5 minus (negative 12)
Nimfa-mama [501]
M-5-(-12) would equal m+7 because there is a negative before the parentheses and in the parentheses which means you would change it to a positive so, negative 5 plus positive 12 is 7 and since the 7 is positive you would add m (hope this helped)
6 0
3 years ago
Estimate the answers to 943.18 + 103.89 by first rounding each number to the nearest ten
kondaur [170]
943.18 + 103.89 = 1040
3 0
3 years ago
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