Answer:
45:36 is the answer.
Step-by-step explanation:
Divide 81 by sum of ratio.
81/(5+4)=81/9=9
So,
5×9 : 4×9
45 : 36
Check: 45+36=91
Subtract 8/15 from both sides so you get x= -0.36
The factors of 20 are:
1, 2, 4, 5, 10, 20
The factors of 25 are:
1, 5, 25
The factors of 40 are:
1, 2, 4, 5, 8, 10, 20, 40
The common factors are:
1, 5
The Greatest Common Factor:
GCF = 5
Let's use a rule of three:
Therefore,
We would neeed 7978.67 lb of blue grass seed.
Answer:
0.535
Step-by-step explanation:
Let students that attend homecoming = H
Let students that attend football game = F
Pr(H) = 43% = 0.43
Pr (H and F) = 23% = 0.23
For conditional probability,
Pr(H and F) = Pr(H) * Pr(H|F)
Pr(H|F) = Pr(H and F) / Pr(H)
=0.23/0.43
Pr(H|F) = 0.535
The probability that a student attends football game and also attends dance = 0.535
