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Please help me with these math problems!! (proportions)?
Ok, I forgot my math notebook which has my notes for proportions.
Anyway these are these questions:
1.) 2/5=8/x
2.)2/7=4/y
3.)20/4=10/f
4.)10/30=2/r
5.)2/3=6/m
6.)5/8=15/q
7.)15/27=5/k
8.)4/x=20/30
9.)6/c=24/28
10.)8/r=24/27
Thanx!
P.S. If its not that hard can you PLEASE show the work. thanx!
2 Answers
- HermioneLv 41 decade agoFavorite Answer
For all of these you need to cross multiply. Then solve for the variable like you would for a normal algebraic equation.
1.) 2/5=8/x
2(x) = (5)(8)
2x = 40
x = 20
2.) 2/7=4/y
2(y) = (7)(4)
2y = 28
y = 14
3.) 20/4=10/f
20(f) = (4)(10)
20f = 40
f = 2
Try to see if you can do the rest. =)
- ?Lv 44 years ago
Miles in step with gallon. Jim drove 343 miles in step with 24.5 gallons. "in step with" is a similar is "divided via." So 343 miles divided via 24.5 gallons is his miles in step with gallon. (You do the calculation, i'm unlikely to furnish you the respond.) Do a similar for Al: 224 divided via 14. it quite is greater constructive?
