<span>So we need to find the average speed of the bus that travels 20 km in 30 minutes. Average speed is defined as: Average speed=distance travelled/time taken or: v=s/t. We know s=20 km and t=30 minutes=0.5h. So after we input our numbers in the equation, we get: v=20km/0.5h=40km/h. So the correct answer is C) 40km/h.</span>
Answer:
d
Step-by-step explanation:
from usatestprep:
The situation is not an example of uniform probability because freshmen, sophomores, juniors, and seniors do not have equal probabilities of being selected.; Uniform probability → equal probability of being selected
P(freshman) =
8/
26
; P(sophomore) =
7
/
26
; P(junior) =
6
/
26
; P(senior) =
5
/
26
; unequal probabilities → not uniform
Polynomial equation solverStandard form:s2 + 5s + 4 = 0Factorization:(s + 4)(s + 1) = 0Solutions based on factorization:<span><span>s + 4 = 0 ⇒ <span>s1</span> = −4</span><span>s + 1 = 0 ⇒ <span>s2</span> = −1</span></span>Extrema:Min = (−2.5, −2.25)<span><span>-4-2-4-22</span><span>x:-4y:0</span></span>
