\(\frac{-8}{15}\)
\(\frac{8}{15}\)
\(\frac{17}{15}\)
\(\frac{-17}{15}\)
Correct answer is A
p>\(x \ast y = \frac{x^2 - y^2}{2xy}\\
=\frac{(x+y)(x-y)}{2xy}\\
-5 \ast 3 =\frac{(-5+3)(-5-3)}{2(-5\times3)}\\
=\frac{-2 \times -8}{2(-5\times3)}\\
=\frac{-8}{15}\)
p varies directly as r3
p varies inversely as r6
p varies inversely as 6√P
p varies directly as r6
Correct answer is C
P ∝ 1/q3
P = K/q3
q3 = K/P
q = K/p1/3
But q ∝ r2
q = Kr2
K/p1/3 = Kr2
r2 = K/p1/3 x 1/K
r2 = 1/p1/3
r = (1/p1/3)2
r = 1/p1/6
r ∝ 1/p1/6
∴ r varies inversely as 6√P
1/12
10/3
1/20
9/5
Correct answer is D
x ⊕ y = xy/6 = xe/6 = x
xe = 6x
e = 6
x ⊕ y = xx1/6 where x1 = 20
x x 20/6 = 6
x = 36/20
x = 9/5
NQ
1/4NQ
2NQ
1/2NQ
Correct answer is A
No explanation has been provided for this answer.
PQRSTW is a regular hexagon and QS intersects RT at V. Calculate ∠TVS
120o
90o
30o
60o
Correct answer is D
No explanation has been provided for this answer.