0.5(100-30) = 35
Hope this helps............
Answer:
A. 10 is less than or equal to 1.75+0.65m
B. D
Step-by-step explanation:
Answer:
No, triangles CDE and HGF are not necessarily congruent.
Step-by-step explanation:
Notice that just having one angle equal in value doesn't make the triangles congruent. To start with, we know that the three internal angles of a triangle must add up to 180 degrees, but all we know when one is 50 degrees, the other two must add up to 130 degrees, which can be done by an infinite number of different angle combinations: 110 + 20, 90 + 40, 80 + 50, etc.
Answer:
B) 3/4
Step-by-step explanation:
3/4 equals 6/8, which is greater than 5/8
Answer:
The standard deviation of the sum is of 8.06.
Step-by-step explanation:
When the distribution is normal, we use 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.
Sum of normal variables:
When we add two normal variables, the mean is the sum of their means, and the standard deviation is the square root of the sum of their variances. In this question:
First intersection -> Standard deviation of 4
Second intersection -> Standard deviation of 7
Sum:

The standard deviation of the sum is of 8.06.