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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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If an area of a rectangle with width x can be represented with the expression A(x)=x(14-x), what is the perimeter of the rectang
AlekseyPX
To solve for the perimeter first figure out the length and width from the formula of area for the rectangle
A = LxW
A = (14-X)•X
L = (14-X)
W = X
P = 2L + 2W
P = 2(14-X) + 2(X)
P = 28 - 2X + 2X
P = 28.
The perimeter of the rectangle is A. 28.
6 0
3 years ago
If 20,x,y,z,25 are in AP .find the value of X,y,z.​
Kamila [148]

Answers:

  • x = 21.25
  • y = 22.5
  • z = 23.75

=============================================================

Work Shown:

AP = arithmetic progression, which is the same as arithmetic sequence

d = common difference

  • x = 20+d
  • y = 20+2d
  • z = 20+3d

Notice how we scale up the d terms d, 2d, 3d, counting up by 1 each time.

So that must mean 25 is the same as 20+4d

20+4d = 25

4d = 25-20

4d = 5

d = 5/4

d = 1.25

and therefore,

  • x = 20+d = 20+1.25 = 21.25
  • y = 20+2d = 20+2*1.25 = 22.5
  • z = 20+3d = 20+3*1.25 = 23.75

We could convert these to fraction form, but I find decimal form is easier in this case.

5 0
3 years ago
Find an equation of the line described. Write the equation in​ slope-intercept form when possible. Through (2,9) and (0,0)
zheka24 [161]

Answer:

y=9/2x

Step-by-step explanation:

I used my notes.

5 0
2 years ago
Help! How do I find the answer
Katyanochek1 [597]

Answer:

C) m∠H = 85°

Step-by-step explanation:

<em>KL is the mid-segment of the triangle</em>, and is correlated with line GH, therefore, they are parallel. This means that <em>m∠K = m∠G and m∠L = m∠H</em>, because they are corresponding and on parallel lines.

By substitution, m∠H = 85°

4 0
3 years ago
Read 2 more answers
Plz help im timed will give brainlyest
EastWind [94]
The answer is 14 my name is freind45
6 0
3 years ago
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