Two angle are supplementary angle A has a measure of 3x+12 and angle B has a measure of 4x+28, what is the measure of each angle
1 answer:
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Answer:
The null hypothesis is
The alternate hypothesis is
Step-by-step explanation:
The diameter of a spindle in a small motor is supposed to be 4.1 millimeters
This means that the null hypothesis is that the diameter has the supposed value, that is,
If the spindle is either too small or too large, the motor will not work properly. The manufacturer measures the diameter in a sample of 41 spindles to determine whether the mean diameter has moved away from the required measurement.
Tests if it has moved away, that is, if the mean is different from the specified value of 4.1. So the alternate hypothesis is
Answer: Choice A
100 degrees
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Explanation:
See the diagram below.
Angle WVX = 130 is marked in red.
Congruent vertical angles WVZ and XVY are each x degrees and are marked in blue.
A red and one blue angle combine to 180 degrees.
blue+red = 180
x+130 = 180
x = 180-130
x = 50
The blue angles WVZ and XVY are 50 degrees each.
So they total 50+50 = 100 degrees
