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EastWind [94]
2 years ago
5

Needing help with this very confusing!

Mathematics
2 answers:
Wittaler [7]2 years ago
6 0

Answer:

The answer is part C

Step-by-step explanation:

AveGali [126]2 years ago
3 0

Answer:

its c

Step-by-step explanation:

Ive had this question before

please give me brainliest  if this helps

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3 years ago
A rectangle with sides measuring x in. and 4x-1 in. has an area of 663in.^2. What are the dimensions of the rectangle?
serious [3.7K]

9514 1404 393

Answer:

  13 in by 51 in

Step-by-step explanation:

The area is the product of the dimensions, so is ...

  663 = x(4x -1)

  4x^2 -x -663 = 0 . . . . . . subtract 663 to put in standard form

Using the quadratic formula, we can find the solutions.

  x = (-(-1) ±√((-1)^2 -4(4)(-663)))/(2(4))

  x = (1 ± √10609)/8 = (1 ±103)/8

Only the positive solution is of any use in this problem, so ...

  x = 104/8 = 13

  4x-1 = 4(13)-1 = 51

The dimensions of the rectangle are 13 inches by 51 inches.

__

I find it easiest to solve these using a graphing calculator.

8 0
3 years ago
What does 7 + 2x = 9
miss Akunina [59]

Answer:

1

Step-by-step explanation:

7 + 2x = 9

Carry over the 7 to the 9.

2x = 9-7

2x= 2

x = 2÷2

x = 1

6 0
3 years ago
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ANSWER ASAP DONT SEND A FILE WHATS THE TRANSFORMATION??
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Step-by-step explanation:

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Please help me in my Math quiz​
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