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2 years ago

6

Lara read for 40 minutes. She read 4 times longer than Ryan. Which equation could be used to calculate the number of minutes tha

t Ryan read? Let the variable p stand for the number of minutes Ryan read. A. 40 = p • 4 B. 40 = p + 4 C. 40 = p ÷ 4 D. 40 • 4 = p

1 answer:

Maru [420]2 years ago

7 0

The answer is A. because if she read 4 times as much, p multiplied by 4= 40

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Answer:

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kaheart [24]

Answer:

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Step-by-step explanation:

$2x+3y=1$

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In order to combine these two equations, an idea you need to keep in mind is finding a way of setting these equations as equal to each other. I saw that each equation shared a common value, $y$ . In this case, we need to isolate $y$ in the first equation so that both equations $=y$ .

$2x+3y=1$

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$y=-\frac{2}{3}x+\frac{1}{3}$

With this, we now know that both $-2-9$ and $-\frac{2}{3}x+\frac{1}{3}$ are equal to $y$ , so we can set them equal to each other.

$y=-\frac{2}{3}x+\frac{1}{3}$

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Reply to this if anything I'm saying or doing is confusing in any way, or if you find a mistake. :) Solve for $x$ .

$-\frac{2}{3}x+\frac{1}{3}=-11$

$-\frac{2}{3}x=-11-\frac{1}{3}$

$-\frac{2}{3}x =-\frac{33}{3}-\frac{1}{3}$

$-\frac{2}{3}x =-\frac{34}{3}$

$-\frac{2}{3}x(-\frac{3}{2})=-\frac{34}{3}(-\frac{3}{2})$

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$x=17$

Hopefully this answer is correct AND makes sense in terms of how I achieved it. Again, reply to this with any questions or mistakes I made and I'll do my best to answer or fix them.

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