Answer:
a = 2
b = 5
Step-by-step explanation:
Given :
(ar^b)^4 = 16r^20 ; a and b are positive integers :
Opening the bracket :
a^4r^4b = 16r^20
a^4 = 16 - - - - - (1)
r^4b = r^20 - - - (2)
a^4 = 16
Take the 4th root of both sides :
(a^4)^(1/4) = 16^1/4
a = 2
From (2)
r^4b = r^20
4b = 20
Divide both sides by 4
4b/4 = 20/4
b = 5
Hence ;
a = 2
b = 5
Answer:
6
Step-by-step explanation:
3z = 18
Divide boboth sides by 3
3z/3 = 18/3
z = 6
Answer:b
Step-by-step explanation: Cause I took the test
So for a 3 by 5 to be enlarged to where one side is 10.5, it must have been multiplied by 2.1 or it won't fit onto the new paper. So you multiply the other number, 3, by 2.1 and get the answer 6.3
Answer:
0.0241 or 2.41%
Step-by-step explanation:
Since each customer has a 17% probability of ordering decaffeinated coffee, the probability of a customer ordering a coffee with caffeine is:
If customers make their decisions independently, the probability that all 20 order a coffee with caffeine is:
The probability is 0.0241 or 2.41%.