Answer:
Step-by-step explanation:
A prime number is a number that times it self and 1.
An odd number is a number that is not divisible by 2.
So our range is 1 - 20
What numbers are prime within this range:
2,3,5,7,11,13,15,17,19
Now which out of these are odd?
2,3,5,7,11,13,15,17,19
The answer is C. Hopefully this help. (Less than 14).
Step-by-step explanation:
AC = 20
AB = 18
BC² = 20²+ 18² -2•20•18•cos(52°)
BC² = 280.72
BC = √280.72
BC ≈ 16.75
Angle C:
18² = 20² + 16.75² -2•20•16.75•cos(C)
324 = 400 + 280.72 -670•cos(C)
cos(C) = -356.72/-670
cos(C) ≈ 0.53
acos(0.53) = C
C = 57.8°
Angle B:
180-52-57.8 = 70.2°
1 because they cannot be divided by the same thing with anything greater than 1
The answer is A since: 3^2+4^2=5^2
25=25