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yfnal3x
28.10.2020 •
Mathematics
Tyler runs 4 laps around the track.Jorge runs 8 times as many laps as Tyler. How many laps does Jorge run? Which equation can help you answer the question? 8x4 = or 8Divided by 4
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Ответ:
Jorge ran 32 laps
Step-by-step explanation:
The equation is 8x4=32
Ответ:
1) "The plans will pay the same at 8 correct questions"
2) "The amount they'll pay at that number of questions is $1600"
3) "You think you can answer 9 questions correctly. Which plan should you choose? Plan B."
Step-by-step explanation:
We can represent each of the two prize plans with a linear equation. Let
be the number of questions a player gets right and let
be the total money earned through the final round.
Plan A:![1280 + 40q = d](/tpl/images/0254/8112/2e47f.png)
Plan B:![800 + 100q = d](/tpl/images/0254/8112/16bf7.png)
1) Since these are linear equations (ie. lines), we can find the intersection in two ways.
(1) Plot a graph
(2) Set equations equal to each other.
I will show (2) but you can confirm by plotting these two lines on a graph.
This means that if you get 8 questions correct, both prize plans will return the same amount of money. Therefore the first question is...
"The plans will pay the same at 8 correct questions"
2) To answer the second statement we simply plug in 8 into either equation. Remember at 8 questions, both prizes give you the same amount of money, so it doesn't matter which equation we select. I will plug 8 into Plan B.
So the second question's answer is...
"The amount they'll pay at that number of questions is $1600"
3) To answer the third and final question. We can simply plug in 9 into each equation and compare. However, a shortcut is to notice that Plan B will give more money for each correct answer. And since 9 questions is greater than our point of intersection 8, Plan B will result in more money.
"You think you can answer 9 questions correctly. Which plan should you choose? Plan B"