Answer:
(3x +4)(9x^2-12x+16)
Step-by-step explanation:
Answer:
The original cost is
$385
Step-by-step explanation:
Step one:
given data'
cost of bicycle= $138
helmet = $16
Total cost = 138+16= $154
Step two:
let the original cost be x
we are told that 40% of x= 154
hence
40/100*x= 154
0.4x=154
divide both sides by 0.4
x= 154/0.4
x=$385
Answer: D
Step-by-step explanation:
Answer:
Less than 264.44 days would be for the shortest 20%
Step-by-step explanation:
Given that X, the length of a human pregnancy is normally distributed with a mean of 272 days with a standard deviation of 9 days (Bhat & Kushtagi, 2006).
X is N(272, 9)
Corresponding Z score would be for any x
We have to find out the shortest 20%
Corresponding z score i.e. z score 20th percentile is given by
-0.84
corresponding x score is
Less than 264.44 days would be for the shortest 20%
4 encuentros,creo Ó 2 encuentros.Pero yo creo que 4