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3 years ago

13

Gianni was thinking about paying his mother back in less than 100 weeks if he pays his mother $20 a week how many week will it t

ake Gianni to pay for the total amount of stereo and television

2 answers:

weeeeeb [17]3 years ago

6 0

What is the total amount of money he owes back?

goldfiish [28.3K]3 years ago

4 0

Answer is 66.6 if you round it up the answer is 67 hope this helps

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For all values of x, f(x) = x^2 + 1 and g(x) = x-5

Elena-2011 [213]

Answer:

a) f g(x) = x³ - 5 x² + x -5

b) g(f(x) = x³ - 5 x² + x -5

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given that f(x) = x² + 1 and g(x) = x-5

a)

f(g(x)) = f(x-5) = (x-5)²+1 = x² - 10x +25 +1 = x² - 10 x +26

<u><em>Step(ii):-</em></u>

a) f g(x) = f(x) g(x) = (x² + 1 )(x-5) = x³ - 5 x² + x -5

b) g(f(x) = g(x) f(x) = (x-5) (x²+1) = x³ - 5 x² + x -5

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3 years ago

Solve the system be either substitution or elimination 3x-5y=21 and 2x+y=1

IRISSAK [1]

Answer:

(2,-3)

Step-by-step explanation:

I used substitution and rearranged the second equation to y=-2x+1. Then I replaced the y in the first equation with -2x+1. So, I got 3x-5(-2x+1)=21. When you solve that you get 13x=26 or x=2. Then you replace x with 2 in either equation and end up with y=-3.

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3 years ago

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Help me please, and example

cricket20 [7]

Answer:

Step-by-step explanation:

i think its c

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3 years ago

3x-2(x+3)=4x-9-x is the question

kozerog [31]

Answer:

$\large\boxed{x = 7}$

Step-by-step explanation:

3x - 2(x + 3) = 4x - 9 - x

Start by multiplying 2 by the values in the parenthesis

3x - 2x + 6 = 4x - 9 - x

Subtract 3x - 2x and 4x - x

x + 5 = 3x - 9

Add 9 to both sides of the equation

x + 14 = 3x

Subtract x from both sides of the equation

14 = 2x

Divide both sides of the equation by 2

$\large\boxed{x = 7}$

Hope this helps :)

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3 years ago