Answer:
a right angle is an angle of exactly 90° (degrees) .
Step-by-step explanation:
Answer:
187 t-shirts and 374 hoodies.
Step-by-step explanation:
(t is shirts)
561 = t + (2t)
561 = 3t
/3. /3
187 = t
ck:
187 + ( 2 times 187) = 561
187 + 374 = 561
561 = 561
Answer:
Altogether James walked
miles.
Step-by-step explanation:
The question involves mixed fractions. Mixed fractions are first converted into proper fractions and then any operation can be performed on them.
Given
Distance of first walk =
of a mile
Distance of second walk = 5/7
In order to find how much he walked altogether, we have to find the sum of both fractions.

Hence,
Altogether James walked
miles.
Answer:
9.18% probability that a randomly selected person sleeps 6 hours or less
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:

What is the probability that a randomly selected person sleeps 6 hours or less?
This is the pvalue of Z when X = 6. So



has a pvalue of 0.0918
9.18% probability that a randomly selected person sleeps 6 hours or less