Answer:
X=√70
Explanation:
explanation is in the image above
hope this helps please mark me brainiest
Which pair of angles are complementary but not adjacent?
2 answers:
We have to find a pair of angles which are complementary but not adjacent.
Adjacent angles are those angles which are one after another and complementary angles are those angles whose sum is 90 degree.
In the given diagram,
And it is given that, measurement of angle 2 is 90.
Substituting 90 for angle 2, we will get
Subtracting 90 degree to both sides
Therefore angle 1 and angle 3 are complementary and there are not adjacent too .
So the correct option is the second option .
You might be interested in
Step-by-step explanation:
a) The graph of a normal curve with a mean of 64" and a standard deviation of 3.5" is a bell-shaped curve with its
maximum value at x = 64.
Important points:
mean - 3 deviations: 64 - 3(3.5) = 64 - 10.5 = 53.5
mean - 2 deviations: 64 - 2(3.5) = 64 - 7 = 57
mean - 1 deviation: 64 - 3.5 = 60.5
mean: = 64
mean + 1 deviation: 64 + 3.5 = 67.5
mean + 2 deviations: 64 + 2(3.5) = 64 + 7 = 71
mean + 3 deviations: 64 + 3(3.5) = 64 + 10.5 = 74.5
b) If there are 3000 plants, approximately how many will be taller than 71"?
71" is 2 standard deviations above the mean. The region between two standard deviations below the mean and two standard deviations holds approximately 95% of the plants.
Therefore there will be approximately 5% of the plants divided equally between being taller than two standard
deviations above the mean and being shorter than two standard deviations below the mean. Thus, there will be
approximately 2.5% of the plants taller than 71": 0.025 x 3000 = 75 plants.
or
the z-score for 71
= (71-64)/35 = 2
going to your tables, or some other suitable source for standard deviation, we find
P(z < 2) = .9772
P(z > 2) = .0228
.0228(3000) = 68.4
or appr 68 plants
