18 Points! K12 Student struggling with deadline!

Mathematics

1 answer:

Liula [17]4 years ago

5 0

Answer:

Step-by-step explanation:

The easiest way is to substitute 8 for x in the first equation,

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Find the other two vertices of a square with one vertex at (0,0) and another at<br> (4,0)

Natalka [10]

The first one is (4,4)

and the second one is (0,4)

Have a good day!!!

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2 years ago

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Solve this equation for x. <br> 2/3(x+8)^2-66=0

yKpoI14uk [10]

Answer:

$\large\boxed{x=-8\pm3\sqrt{11}}$

Step-by-step explanation:

$\dfrac{2}{3}(x+8)^2-66=0\qquad\text{add 66 to both isdes}\\\\\dfrac{2}{3}(x+8)^2-66+66=0+66\\\\\dfrac{2}{3}(x+8)^2=66\qquad\text{multiply both sides by 3}\\\\3\!\!\!\!\diagup^1\cdot\dfrac{2}{3\!\!\!\!\diagup_1}(x+8)^2=(3)(66)\\\\2(x+8)^2=198\qquad\text{divide both sides by 2}\\\\\dfrac{2\!\!\!\!\diagup^1(x+8)^2}{2\!\!\!\!\diagup_1}=\dfrac{198\!\!\!\!\!\diagup^{99}}{2\!\!\!\!\diagup_1}\\\\(x+8)^2=99\iff x+8=\pm\sqrt{99}\qquad\text{subtract 8 from both sides}$

$x+8-8=-8\pm\sqrt{(9)(11)}\qquad\text{use}\ \sqrt{ab}=\sqrt{a}\cdot\sqrt{b}\\\\x=-8\pm\sqrt9\cdot\sqrt{11}\\\\x=-8\pm3\sqrt{11}$

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4 years ago

Help with question 20 pleaseee

charle [14.2K]

Answer:

This sounds like 35=4p or p=8.75

Step-by-step explanation:

Each p represents the amount each person paid for the ticket, since you AND your 3 friend (4 in total) paid for the tickets the total price was 35 dollars. Each of you paid $8.75.

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You would need to find the ratio of how many will prefer orange
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Matt has already sold $72 worth of tickets to the benefit concert. He had 6 tickets left to sell at $9 per ticket.

gizmo_the_mogwai [7]

What is the question?
Matt sold 8 tickets at $9 each. 8 tickets x $9= $72
He still has 6 tickets left. 6 x $9=$54
Total tickets=14
Total amount of money when he is done selling the rest of the tickets is $126

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3 years ago

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