-3 subtract the perenthesis (-1) equal to -2
Answer:
9×2
Step-by-step explanation:
(-3x)2=-3x×-3x=9×2
Answer:
4, -3
Step-by-step explanation:
The quadratic formula is
.
When using the formula for both the negative and positive value of the sqrt, you will get:
x = 4, -3
Answer:
the probability that the sample mean will be larger than 1224 is 0.0082
Step-by-step explanation:
Given that:
The SAT scores have an average of 1200
with a standard deviation of 60
also; a sample of 36 scores is selected
The objective is to determine the probability that the sample mean will be larger than 1224
Assuming X to be the random variable that represents the SAT score of each student.
This implies that ;

the probability that the sample mean will be larger than 1224 will now be:






From Excel Table ; Using the formula (=NORMDIST(2.4))
P(\overline X > 1224) = 1 - 0.9918
P(\overline X > 1224) = 0.0082
Hence; the probability that the sample mean will be larger than 1224 is 0.0082
Answer:
pretty sure is the first one
Step-by-step explanation:
-1/2x +3 =3x -4