Step-by-step explanation:
3(4 *to the power of 2* - 3*to the power of 2*)
24-23 x 3
3*to the power of 3* - 3*to the power of 2
(6*to the power of 2* - 3) (9*to the power of 2* - 70)
- (6²-3)(9²-70)
- (36-3)(81-70)
- (33)(11)
- 363
Hence, Option d. is the correct answer because it gives answer 3 when it is solved.
The answer is b thank you
Answer. C + .07c
Step-by-step explanation:
C is retail. Sales tax of 7% (.07) is added to that retail cost to reach the total sales price
Answer:
45+67×56=37,565
Step-by-step explanation:
i hope it helps you
Answer:
a) 6.68th percentile
b) 617.5 points
Step-by-step explanation:
Problems of normally distributed samples are solved using the z-score formula.
In a set with mean
and standard deviation
, the zscore of a measure X is given by:

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
In this problem, we have that:

a) A student who scored 400 on the Math SAT was at the ______ th percentile of the score distribution.



has a pvalue of 0.0668
So this student is in the 6.68th percentile.
b) To be at the 75th percentile of the distribution, a student needed a score of about ______ points on the Math SAT.
He needs a score of X when Z has a pvalue of 0.75. So X when Z = 0.675.



