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kiruha [24]
3 years ago
8

Use the elimination method to solve the system of equations. Choose the

Mathematics
1 answer:
Anarel [89]3 years ago
8 0

Answer:

D. (6,6)

Step-by-step explanation:

Given the system of two equations

\left\{\begin{array}{l}3x+5y=48\\ \\-3x+5y=12\end{array}\right.

1. Add these two equations:

3x+5y-3x+5y=48+12\\ \\10y=60\\ \\y=6

2. Subtract these two equations:

(3x+5y)-(-3x-5y)=48-12\\ \\3x+5y+3x-5y=36\\ \\6x=36\\ \\x=6

Hence, the solution to the system is (6,6)

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3 years ago
(-10) - |(-20) – (+30) |
myrzilka [38]

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EXPLANATION: To solve for (-10) - |(-20) – (+30) |, we need to do:

−10−| −20 − 30|, which equals −10−|−50|. Next, we do −10−50, which is -60.

−10−|−20−30|

= −10−|−50|

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3 years ago
Sis In order to identify the zeros of the function, a student factored the cubic function ()=−−f of , open x close , equals , x
creativ13 [48]

Answer:

f(x)=x(x-5)(x+2)

Step-by-step explanation:

Since the steps of the factorization of the polynomial f(x) is not given, I will proceed to give the correct factorization of f(x).

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First, we factor out x since it is a common term.

f(x)=x(x²-3x-10)

Next, we factorize the quadratic expression x²-3x-10.

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The correct factorization of the polynomial f(x)=x³-3x²-10x is: f(x)=x(x-5)(x+2)

7 0
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