Answer:
Option d) 840
Step-by-step explanation:
Given that a test to measure psychotic tendencies was given to a group of 1,000 air force cadets who wished to work in nuclear silos.
If Score ≥64 would be eliminated.
X is N(52, 12)
Probability for any random person to get eliminated
=
Now coming to sample size of 1000 people, we find each person is independent of the other and there are two outcomes either >64 or < 64
So Y no of persons who get more than 64 is binomial with n =1000 and p = 0.1587
Mean of Y = E(Y)
= no of people who were not accepted 
No of people accepted 
Approximately we get 840 so option d
Answer:
There are 4 crickets left
Step-by-step explanation:
10/2=5
20% of 5 is 1
5-1=4
Don't forget to brainliest me
Answer:
Answer = 140
Step-by-step explanation:
360 = 9x + 14x + 4x + 90
360 - 90 = 27x
270 = 27x
x = 270 / 27
x = 10
14 x 10 Angle F
Measure of angle F = 140
The option that shows what all the polygons have in common is that;
B. Each appears to have exactly one pair of parallel sides.
<h3>Polygon</h3>
Looking at the polygons given, we can see that;
- Polygon A has 4 sides and one pair of parallel sides and it is a quadrilateral because it has 4 sides.
- Polygon B has 4 sides and one pair of parallel sides and it is a quadrilateral because it has 4 sides.
- Polygon C has 6 sides and so is not a quadrilateral but a hexagon and it has a pair of parallel sides.
- Polygon D has 5 sides and so is a pentagon but has a pair of parallel sides.
Looking at all the polygons the only common statement is that they a pair of parallel sides.
Read more on polygons at;brainly.com/question/5715879
Measure of angle 2 is 77. hope this helped.
