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vlada-n [284]
3 years ago
6

The difference between two numbers is 2 and their product is 224. What are the numbers?

Mathematics
1 answer:
Sati [7]3 years ago
4 0

Let x,y be the two numbers. We have two pieces of information:

x-y=2 (the difference between the two numbers is 2)

xy=224 (their product is 224)

From the first equation, we can deduce x=y+2

If we plug this expression in the second equation, we have

xy = (y+2)y = 224 \iff y^2+2y-224 =0

If you solve this equation with the usual quadratic formula you get the solutions

y=-16,\quad y=14

So, you have the following couple of solutions, recalling that x is 2 more than y:

\begin{cases} x = -14\\y=-16\end{cases},\quad\begin{cases} x = 16\\y=14\end{cases}

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Answer:

The amount that Barry would pay in interest for his loan is $15.05.

Step-by-step explanation:

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Where,

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3 0
2 years ago
Bill is h cm tall. Siena is 4cm taller than bill.Write down an expression in terms of h for siena's height in cm
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