Answer:
A(r)=15-3r
Step-by-step explanation:
switch the sign of +3r to make it -3r
The answer is 16 bc yeah i said it was
Its very easy
455 means 5*7*13
now divide (5*7*13) by 7
you will easily get 5*13=65
Answer:
9+6i
Step-by-step explanation:
3+6=9
5+1=6
Answer:
The actual SAT-M score marking the 98th percentile is 735.
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:

Find the actual SAT-M score marking the 98th percentile
This is X when Z has a pvalue of 0.98. So it is X when Z = 2.054. So



