The sum of three numbers a, b, and c is 77. If a decreased by 5 is equal to b increased by 5 and is also equal to c multiplied b
y 5, what is the value of b? What is the answer to this problem?
1 answer:
Answer:
b = 33.546.
Step-by-step explanation:
a + b + c = 77 (1)
a - 5 = b + 5 (2)
a = 5c (3)
from equation 2:
a - b = 10
Adding this equation to equation 1:
2a + c = 87
But a = 5c so
10c + c = 87
c = 87/11 = 7.909
and a = 5*7.909 = 35.545.
b = 77 - 7.909 - 35.545
= 33.546
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Step-by-step explanation:
I wrote out the steps on the attached slide. I hope I'm able to help you, Sweetie.
let two integers be x and y
A.T.Q
x+y= -3
or, x= -3-y(i)
and xy= -18
or,(-3-y)y= -18[by(i)]
or,- -3y-y²= -18
or,-y²= -18+3
or, -y²= -15
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therefore y=✓15
from (i)
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Step-by-step explanation:
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