the triangle is a right angle triangle
D must be perpendicular to a because d is parallel to c. c is perpendicular to b. b is parallel to a.
Answer:
NO i do not think so because you would end with a -4 not positive because a positive times a negative is a negative so (-3,4) is not a solution.
I hope this helps sorry if am wrong
Step-by-step explanation:
Answer:
0.0359
Step-by-step explanation:
Data provided:
mean values of three independent times are 15, 30, and 20 minutes
the standard deviations are 2, 1, and 1.6 minutes
Now,
New Mean = 15 + 30 + 25 = 65
Variance = ( standard deviation )²
or
Variance = 2² + 1² + 1.6² = 7.56
therefore,
Standard deviation = √variance
or
Standard deviation = 2.75
Thus,
Z-value = 
or
Z-value = - 1.81
from the Z-table
the Probability of Z ≤ -1.81 = 0.0359
Answer:
B
Step-by-step explanation:
negative numbers are always the numbers before the positive numbers but be careful because negative numbers are different from normal numbers going to the left the negative numbers get larger but they are actualy getting smaller like -17 is smaller than -16 it is confusing LOL but uh yeah so if you had -17 it would go -17,-16,3,47 the numbers are getting larger.
