Answer:
b = -5
Step-by-step explanation:
Answer:
m<A = 84
AC = 9
Step-by-step explanation:
We can find the measure of Angle A by using the sum of interior angles of a triangle theorem.
48+48+A=180
96+A=180
A=84
We can then use the isosceles triangle similarity theorem and reason that since this is an isosceles triangle and one of the side lengths (AB) is 9, the other (AC) would also be 9.
Answer: 81pi square meters
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Work Shown
C = 18pi is the given circumference
d = diameter which is unknown
C = pi*d
18pi = pi*d
18 = d
d = 18
The diameter is 18 meters.
Half of this is the radius r = d/2 = 18/2 = 9
The radius is 9 meters
Use the value of r to find the area of the circle
A = pi*r^2
A = pi*9^2
A = pi*81
A = 81pi
The area of the circular cross section is 81pi square meters
Answer:
The sample proportion of undergraduate students that used library books is 0.5286.
Step-by-step explanation:
The sample proportion is the number of desired outcomes divided by the size of the sample.
In this question:
Sample of 70 undergraduate students, 37 had used library books.
The sample proportion of undergraduate students that used library books is 0.5286.
Answer:
y=20x + 40x
Step-by-step explanation: