In mathematics, a ratio is a relationship between two numbers<span> indicating how many times the first number contains the second. For example, if a bowl of fruit contains eight oranges and six lemons, then the ratio of oranges to lemons is eight to six (that is, </span>8:6<span>, which is equivalent to the ratio </span>4:3<span>).</span>
Answer: I think b=5
Step-by-step explanation:
Your first and second derivatives which are the velocity and the acceleration respectively are correct.
The particle has reverses direction when v(t) ≤ 0 so at interval 2 < t < 5 sec.
You can substitute now t = 2 for s(2) and a(2) for first changing direction. Also t = 5 for s(5) and a(5) for second changing direction.
Answer:
a. 70 miles per hour
b. 840 miles
Step-by-step explanation:
280/4 = 70 miles per hour
70*12 = 840 miles
Answer:
B = 54°; a ≈ 1.86; b ≈ 4.19
Step-by-step explanation:
The remaining angle is ...
B = 180° -105° -21° = 54°
The law of sines tells you the side lengths are in proportion to the sines of the angles:
a = 5·sin(A)/sin(C) ≈ 1.86
b = 5·sin(B)/sin(C) ≈ 4.19
