7^1 (-1x-1=1)
5^3 (2+4-3=3)
With the distributive property, you multiply whatever is one the outside of the parenthesis, by each term on the inside.
6a + 6b
Also, whats with the image? Lol.
Answer:
6. 11.25 miles
7. The Mall; 1.13
8. No, because a one-way there is 17.3 miles.
9. 6.37 miles
10. No, it is 7.77 miles away from his home.
Step-by-step explanation:
Answer:
Answered and explained below
Step-by-step explanation:
A) We are told that frequency of the trait is still 1 in 8. Thus, population proportion; p = 1/8 = 0.125
Sample size; n = 150
Formula for mean is;
μ = np
μ = 150 × 0.125
μ = 18.75
Formula for standard deviation is;
σ = √(np(1 - p))
σ = √(150 × 0.125(1 - 0.125))
σ = √16.40625
σ = 4.05
B) usually, when np ≥ 10 , we make use of normal distribution.
I'm this case, it is 18.75 which is greater than 10.
Thus,we can use a normal model to approximate the distribution.
C) we are told that he found the trait in 22 of the frogs.
Thus;
Proportion is now; 22/150 = 0.1467
This is a higher probability that the initial one of 0.125 and we can say that the trait has become more common.
A. Faces
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