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Doss [256]
3 years ago
11

Help will give the brain crown or whatever it is!!!

Mathematics
1 answer:
dolphi86 [110]3 years ago
8 0

Answer:

A will be 5 and B will be 25

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Anyone? Know how to do this?
ki77a [65]

Answer:

  • x = 4
  • length = 19 ft
  • width = 11 ft

Step-by-step explanation:

The area is given by the product of length and width.

  A = LW

  209 = (4x +3)(4x -5)

  209 = 16x^2 -8x -15

  224 = 16x^2 -8x

You could rearrange and use the quadratic formula at this point, but we elect to "complete the square".

  14 = x^2 -(1/2)x

  14 +1/16 = x^2 -1/2x +(1/4)^2 . . . . . add the square of half the x-coefficient

  (x -0.25)^2 = 14.0625

  x = 0.25 ± 3.75 . . . . . . take the square root; add 0.25

Only positive values of x are useful here, so we have

  x = 4

Then the dimensions are ...

  length = 4x +3 = 4(4) +3 = 19 . . . feet

  width = 4x -5 = 16 -5 = 11 . . . feet

5 0
3 years ago
I really need help with these two problems ?
Annette [7]

Answer:

This dude is a d!(k

Step-by-step explanation:

He deleted my answer and marked this other dude brainliest

6 0
3 years ago
Which of the following functions is graphed above?
denis-greek [22]

Answer:

i'm pretty sure it is c

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Give A ={a,b,c} and B = {c, a}, which of the following is not true
Alborosie

Answer:

The second one

Step-by-step explanation:

B c A

Because B has c and a, which is part of A (A={a, b, c})

8 0
3 years ago
SORRY! BUT ALL HELP IS REALLY APPRECIATED! AND WOULD LIKE IF YOU COULD HELP A GURL OUT THANKS
Korolek [52]

Answer:

b is the answer trust me i know

Step-by-step explanation:

6 0
3 years ago
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