A direct variation suggest that the value of x in the equation would greatly affect the value of y such that when x is increasing, y also increases and the other way around. The equation for a direct variation is that,
y = kx
Substituting the given values in the ordered pair,
5 = k(4) ; k = 5/4
Answer:
c=2.22
Step-by-step explanation:
1/a- 1/b=1/c- 1/d
1/1/2- 1/1/4=1/c- 1/1/5
0.5-0.25=1/c- 0.2
0.25=1/c- 0.2
0.25+0.2=1/c
0.45=1/c
cross multiply
0.45×c=1
0.45c=1
divide both sides by 0.45
0.45c=1/0.45
c=2.22
215 to the nearest hundred is 200.
Thank you.
Answer: A. S(t)= 1000 + 0.63t + 0.48t - 17t
B. S(t)= 984.11
Step-by-step explanation:
<span>1. Quizzes (10% each):
60 x 10/100 = 6
69 x 10/100 = 6.9
68 x 10/100 = 6.8
2. Exam (70%)
65 x 70/100 = 45.5
Add them all up now:
6 + 6.9 + 6.8 + 45.5 = 65.2
Therefore, answer is </span><span>65.2</span>