3 years ago

Help me answer 1 and 2 please

Mathematics

1 answer:

Fittoniya [83]3 years ago

8 0

I think 1 is -540 and 2 is -290

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2 years ago

Solve the following system of equations by substitution. Show all steps.

Alinara [238K]

Answer:

Given system of equations:

$\begin{cases}f(x)=-x^2+2x+3\\g(x)=-2x+3\end{cases}$

To solve by substitution, equate the equations and solve for x:

$\begin{aligned}f(x) & = g(x)\\\implies -x^2+2x+3 & = -2x+3\\-x^2+4x & = 0\\x^2-4x & = 0\\x(x-4) & = 0\\\implies x & = 0\\\implies x-4 & = 0 \implies x=4\end{aligned}$

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Therefore, the solutions to the given system of equations are:

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2 years ago

in 6th grade, miguel read 15 books. In 7th grade, he read 21 books. What was the percentage change in the number of miguel read

Savatey [412]

Answer:

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Step-by-step explanation:

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Your answer is A.

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3 years ago