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2 years ago

5

Last week, the price of apples at a grocery store was $1.60 per pound. This week, apples at the same grocery store are on sale a

t a 10% discount. What us the total price of 4 1/2 pounds of apples this week at the grocery store?

1 answer:

Finger [1]2 years ago

7 0

It is 2.56 because per pound equals the amount

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Tobeg says the equation 3x + 2y= 270 and y=4/5x + 20 intersect at the point (50,60) is this true how do you know

il63 [147K]

ANSWER

Yes it is very true

<u>EXPLANATION</u>

If the two equations intersect at $(50,60)$ then this point must satisfy the two equations.

$3x+2y=270---(1)$

We substitute $(50,60)$ in to erquation (1)

$3(50)+2(60)=270$

$150+120=270$

$270=270$

$y=\frac{4}{5}x+20 ---(2)$

We now substitute $(50,60)$ in to erquation (2) also

$60=\frac{4}{5}(50)+20$

$60=40+20$

$60=60$

Since the point satisfy all the two equations, it is true that they intersect at $(60,50)$

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