Here is the distribution of blood types for randomly chosen black Americans:
A
B
AB
Blood
Type:
0.49
0.27
0.20
0.04
Probability:
Joe can safely receive blood transformations from
people with blood types O and B. What is the
probability that a randomly chosen black American
can donate blood to Joe?

You are standing next to a really big circular lake. you want to measure the diameter of the lake, but you don't want to have to swim across with a measuring tape! you decide to walk around the perimeter of the lake and measure its circumference, and find that it's 400\pi\text{ m}400? m. what is the diameter dd of the lake?

Solve 2 - 3 cos x = 5 + 3 cos x for 0° ≤ x ≤ 180° a. 150° b. 30° c. 60° d. 120°

Pls yall i really need the answer fr fr