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defon
3 years ago
5

-x^2+8x=7 quadratic formula

Mathematics
1 answer:
Ludmilka [50]3 years ago
4 0

Answer:

x= 7,1

Step-by-step explanation:

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What is the value of x?
Sergio [31]
Hi there!

In order to find x, we'll need to set up a proportion. This proportion is 77/22 = 87.5/x. Now, we need to cross-multiply, leaving us with 77x = 1925. Lastly, we'll need to divide in order to get the section that makes up the missing part of x. This is 25 ft. All that is left to do to find the total value of x is to add 25 and 22 together. The value of x is 47 feet.

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6 0
3 years ago
What are the solutions to the equation -54 + 6x = 0
Sladkaya [172]

Answer:

x=9

Step-by-step explanation:

  1. -54 + 6x  =   6 • (x - 9)
  2. Solve :    6   =  0
  3.  Solve  :    x-9 = 0
  4. Add  9  to both sides of the equation :     x = 9
7 0
3 years ago
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I need help!!!!!!!!!!!! PLEASE jehdjfjfjjfkfjfkfkflflflgjfjfolflfoforo
hammer [34]

Answer:

So you know this picture is a function so it cannot be a or b. The answer is C.

Step-by-step explanation:


6 0
3 years ago
2X+4=20+5X<br>A)1/2 B)-1/2 C)2 D)-2​
Nookie1986 [14]

Answer:

It seems that your options aren't correct as the right answer is -5.3333... (recurring)

Step-by-step explanation:

1)  2x + 4 = 20 + 5x   (subtract by the smallest unknown)

  -2x                  -2x

2)  4        = 20 + 3x

    -20      -20    (now subtract each side by 20 as we want to leave the unknown on one side and another number on the other side.

3) -16       = 3x   (Divide each side by 3)

   ÷3        = ÷3

4) -5.33333... = x

<h3>Now we have found x but if you're unsure you can substitute to see if your answer is correct.</h3><h3>2 x -5.3333 + 4 = -6.6666</h3><h3>20 + 5 x -5.3333= -6.6665</h3><h3>Our answer is correct! (When answers are rounded, it is equal to the same thing).</h3>
7 0
3 years ago
in a survey 2,000 people who owned a certain type of car, 1,100 said they would buy that type of car again what percent of peopl
Gnom [1K]
The answer is 55% because 1,100 is 55% of 2,000
3 0
3 years ago
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