SOLUTION: V=0.104h-0.018a-2.69 (a)age=14 (h)hieght=67" Solve the formula for age(a). Estimate how old you will be when your air volume is 90% of its current volume. (use current hie

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: V=0.104h-0.018a-2.69 (a)age=14 (h)hieght=67" Solve the formula for age(a). Estimate how old you will be when your air volume is 90% of its current volume. (use current hie      Log On


   

Question 174979: V=0.104h-0.018a-2.69
(a)age=14
(h)hieght=67"
Solve the formula for age(a). Estimate how old you will be when your air volume is 90% of its current volume.
(use current hieght)
Answer by mangopeeler07(462) About Me  (Show Source):
You can put this solution on YOUR website!
(a)age=14
(h)hieght=67"
Solve the formula for age(a). Estimate how old you will be when your air volume is 90% of its current volume.

(use current height)

solve the formula for a:
V=0.104h-0.018a-2.69
V+2.69=0.104h-0.018a
V+2.69-0.104h=-0.018a
%28V%2B2.69-0.104h%29%2F-0.018=a
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Solve for V so you can plug 90% of it in later...

V at a=14 and h=67:
V=0.104h-0.018a-2.69
V=0.104(67)-0.018(14)-2.69
V=4.026
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a for h=67 and .9V when V=4.026--------->90% of V
V=0.104h-0.018a-2.69
.9V=(0.104h-0.018a-2.69)
.9(4.026)=(0.104(67)-0.018a-2.69)
3.6234=6.968-.018a-2.69)
3.6234=4.278-.018a
-.6546=-.018a
36.4=a