2008
Mathematics
67ca00ce0c643c71d77dee1f
If x - 3 is directly proportional to the square of y and x = 5 when y =2, find x when y = 6.
A.
30
B.
21
C.
16
D.
12
Correct Answer: 21
Explanation
(x – 3) ∝ y2 X-3 = Ky2 K = X-3 / y2 = 5-2/22 = 2/4 = 1/2 ∴X-3 = 1/2y2 X-3 = 1/2 (6)2 X-3 = 1/2 x 36/1 X-3 = 18 X = 21
(x – 3) ∝ y2 X-3 = Ky2 K = X-3 / y2 = 5-2/22 = 2/4 = 1/2 ∴X-3 = 1/2y2 X-3 = 1/2 (6)2 X-3 = 1/2 x 36/1 X-3 = 18 X = 21THIS WEEK's
Latest Articles
Top-Scorer Okoro Uchechukwu Solomon Reveals How He Scored 337 in JAMB
by samuel olalekan adeyemi
Bouncing Back: How Samuel Isaac Overcame Setbacks to Score 265 in JAMB and What He Learned
by samuel olalekan adeyemi
Managing Stress During Exams: Practical Tips for Students
by samuel olalekan adeyemi
