Answer:
v^2 - 4v - 32
Step-by-step explanation:
Expand (v - 8) (v + 4) using the FOIL method.
apply the distributive property.
v (v + 4) - 8 (v + 4)
v x v + v x 4 - 8 (v + 4)
v x v + v x 4 - 8v - 8 x 4
simplify and combine like terms.
v^2 + v x 4 - 8v - 8 x 4
v^2 + 4 x v - 8v - 8 x 4
v^2 + 4v - 8v - 32
v^2 - 4v - 32
1. (C) 3:5
2. 30 minutes
3. (B) 46
4. (D) $8 for 3.5 kg
5. 20 hours
6. 3:5, 6:10, 9:15, 12:20
7. 56cm, 1.8ft, 20in
8. (D) 50.75
9. $13.50
10. 1,944 minutes
Answer:
0.053
Step-by-step explanation:
This is a geometric distribution problem.
I'm geometric distribution problem,
E(X) = 1/p
Where;
E(X) is expected value and p is probability of success
Thus;
1/p = 12.5
p = 1/12.5
p = 0.08
Now, to find the probability that the sixth person tested is the first one with high blood pressure, we will use the probability formula in geometric distribution which is;
P(X = k) = qⁿ•p
q = 1 - p
q = 1 - 0.08
q = 0.92
Thus;probability that the sixth person tested is the first one with high blood pressure will be expressed as;
P(X > 5) = (0.92^(5)) × 0.08
P(X > 5) = 0.053
31 +31 + 17+17 = 96 feet around the whole room
96 / 8 = 12
he will need to buy 12