Answer:
a = 10 or a = -10
Step-by-step explanation:
a^-2 = 1/100
We know 100 = 10^2
a^-2 = 1/10^2
We know 1/b^c = b^-c
1/a^2 = 1/ 10^2
Multiply by a^2 on each side
a^2 *1/a^2 = 1/ 10^2 *a^2
1 = a^2/10^2
Multiply by 10^2 on each side
1 0^2= a^2/10^2 * 10^2
10^2 = a^2
Take the square root of each side
sqrt(10^2) = sqrt(a^2)
±10 =a
Answer:
Probability = 0.01531
Step-by-step explanation:
Prob (Getting 92 out of 100 germinated seeds) follows binomial probability distribution.
N = Number of seeds = 100. r = Number of success (germination) = 92
r = No. Success = Seed germination, Prob (Success) ie P = 85% = 0.85 , Prob (non success ie non germination) ie Q = 1 - 85% = 15% = 0.15
Probability = N c r . (P)^r . (Q)^(n-r)
= 100c92 (0.85)^92 (0.15)^8
= 186087894300 (0.000000321026708) (0.000000256289062)
= 0.01531 {Approx}
Answer: -1
Step-by-step explanation:
i really don't know but i was taking a test and i guessed it and it was right
Answer:
12
Step-by-step explanation:
We know that 15/20 students voted in the StuCo election on the first go around.
Using this ratio for 16 student is as simple as multiplying 15/20 by 16
(15/20)*16=12