Answer + Step-by-step explanation:
1) The probability of getting 2 white balls is equal to:

2) the probability of getting 2 white balls is equal to:

3) The probability of getting at least 72 white balls is:

![=\sum^{150}_{k=72} [C^{k}_{150}\times \left( \frac{8}{15} \right)^{k} \times \left( \frac{7}{15} \right)^{150-k}]](https://tex.z-dn.net/?f=%3D%5Csum%5E%7B150%7D_%7Bk%3D72%7D%20%5BC%5E%7Bk%7D_%7B150%7D%5Ctimes%20%20%5Cleft%28%20%5Cfrac%7B8%7D%7B15%7D%20%5Cright%29%5E%7Bk%7D%20%20%5Ctimes%20%5Cleft%28%20%5Cfrac%7B7%7D%7B15%7D%20%5Cright%29%5E%7B150-k%7D%5D)
5/4 ιѕ вιggєя тнαи 1/2
вє¢αυѕє 5/4 ιѕ α ιмρяσρєя fяα¢тισи. αи∂ ¢συℓ∂ вє ωяιттєи αѕ 1 1/4, σя 1.25
ωнιℓє 1/2 ¢αи вє ωяιттєи αѕ .50, σя 1/2.
нσρє ι ¢συℓ∂ нєℓρ уσυ
Answer:
A straight angle changes the direction you are pointing in. A straight angle looks like a straight line. It has an angle measurement of 180 degrees. Straight angles can be composed of several angles, as long as the angles add up to 180 degrees.
Step-by-step explanation:
Answer:
right triangle
Step-by-step explanation: