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3397md
29.09.2019 •
Mathematics
Find a quadratic equation with integer coefficients that has the given solution set. {-8,4}
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Ответ:
answer:
(x+8)(x-4) = 0 is an answer cause you just need at least one to be 0
step-by-step explanation:
Ответ:
8m + 3a = 18.89
Multiply the first equation by 3 and the second equation by 7
12m + 21a = 44.67
56m + 21a = 132.23
Then subtract the equations and get:
44m=87.56
m=1.99
mangoes cost = $1.99
To find the price of apples, substitute with the mangoes on one equation
4(1.99) + 7a = 14.89
7.96 +7a = 14.89
7a = 6.93
a = 0.99
apples cost = $0.99
hope this helps///:)::))):))