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NARA [144]
3 years ago
15

How to you solve x2 -20x -17 = -53

Mathematics
1 answer:
Gennadij [26K]3 years ago
7 0

Answer:

solve for x

x=2

Step-by-step explanation:

x2-20x-17=-53

reorder like terms x2= 2x       2x=20x-17=-53

collect like terms 2x-20x=-18x           -18x-17=-53

move constant to the right hand side and change its sign   -18x=-53+17

calculate the sum -53+17= -36         -18x=-36

divide both sides by -18  -18x÷-18= x        -36÷-18=2

x=2

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adoni [48]

Answer:

S=45m+15

Step-by-step explanation:

we have

E------>the number of sit-ups

m---->  the time in minutes

S----> the number of sit-ups after drinking the sports drink

E=15m+5 ----> equation A

S=3E ----> equation B

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S=3(15m+5)

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7 0
2 years ago
Can anyone solve 84=4(1 - 4g) step by step?
lyudmila [28]

Answer:

g= -5

Step-by-step explanation:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

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 84 -  4 • (1 - 4g)  = 0

3.1     Pull out like factors :

  16g + 80  =   16 • (g + 5)

16 • (g + 5)  = 0

4.1      Solve :    16   =  0

This equation has no solution.

A a non-zero constant never equals zero.

4.2      Solve  :    g+5 = 0  

Subtract  5  from both sides of the equation :  

                     g = -5

I hope it helps you and if you want you can give me a brainly crown only if you want

7 0
3 years ago
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astraxan [27]

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3 years ago
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Step-by-step explanation:

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HELP !!! Use the elimination method to solve the system of equations.
Dafna1 [17]

Answer:

C. (5, -3)

Step-by-step explanation:

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4x + 3y = 11

3x - 3y = 24

---------------------add

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y = 5 - 8

y = -3

(5, -3)


3 0
3 years ago
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