Somebody can help me plz? It seems easy for y’all but not for me haha

Mathematics

1 answer:

Naddika [18.5K]3 years ago

3 0

Answer:

I'll say 25 but not too sure!

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What is the solution to the system of equations? y = -5x + 3 y = 1

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Answer:

(x, y) = (2/5, 1)

Step-by-step explanation:

Substitute for y and solve for x.

1 = -5x +3

-2 = -5x . . . . . . subtract 3

2/5 = x . . . . . . divide by -5

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Read 2 more answers

What is the area of the two rectangles shown below?

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Answers are in bold.

For the first one:

The total area of both shaded and unshaded portions is equal to $3x(4x+7)$ , which simplifies to $12x^2}+21x$ . The area of the middle white portion is $(5x)(2x)$ , which simplifies to $10x^2$ . To find the area of the shaded portion, we do $12x^2}+21x - 10x^2$ . Combining like terms, we get $2x^2+21x$ as our expression for the area of the shaded portion of the first rectangle.

For the second one:

The total area of both shaded and unshaded portions is equal to $6n(8n+14)$ , which simplifies to $48n^2}+84n$ . The area of the middle white portion is $10n(4n+1)$ , which simplifies to $40n^2+10n$ . To find the area of the shaded portion, we do $48n^2+84n-40n^2+10n$ . Combining like terms, we get $4n^2+94n$ as our expression for the area of the shaded portion of the second rectangle.