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yesmi
31.01.2020 •
Mathematics
Holly made fruit punch for an office party a few months ago; she used 1 gallon of strawberry juice and 3 gallons of watermelon juice, which cost her a total of $8. for today’s party, she used 3 gallons of strawberry juice and 2 gallons of watermelon juice, spending a total of $10. how much does a gallon of each type of juice cost?
write a system of equations to describe the situation and solve using elimination. (use x for strawberry juice and y for watermelon juice)
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Ответ:
x+3y=8
3x+2y=10
then you would subtract 3y from that side so you now have
x=-3y+8
then you would place that into the equation ender it so
3(-3y+8)+2y=10
distribute
-9y+24+2y=10
add like terms
-7y+24=10
subtract 24 from both sides
-7y=-14
divide by 7 on both sides
y=2
and since a negative divided by a negative is a positive the answer is positive 2
then plug it back in to find x
x + 6=8
subtract 6 from both sides
x=2
so there you have it
x=2
y=2
Ответ:
Sorry for my previous answer; I didn't read that it was point slope form ;-;
y - 7 = 9(x - 2)
9x - y - 11
I believe this is the answer, let me know if I'm incorrect :)