51
48
30
25
18
Correct answer is C
Let the total score for the girls and the boys be A and B respectively.
\(\frac{A}{20} = 52 \implies A = 52 \times 20\)
A = 1040
\(\frac{B}{y} = 57 \implies B = 57y\)
1040 + 57y = 2750
57y = 2750 - 1040
57y = 1710
y = \(\frac{1710}{57}\)
y = 30
If y2+ 14y + k is a perfect square, then k =
4
7
28
49
196
Correct answer is D
No explanation has been provided for this answer.
If 2x : ( x + 1) = 3 : 2, what is the value of x?
\(\frac{1}{2}\)
1
1\(\frac{1}{2}\)
3
3\(\frac{1}{2}\)
Correct answer is D
No explanation has been provided for this answer.
\(\frac{1}{9}\)
\(\frac{1}{6}\)
\(\frac{5}{18}\)
\(\frac{1}{3}\)
\(\frac{13}{18}\)
Correct answer is C
No explanation has been provided for this answer.
5cm
6cm
7cm
10cm
12cm
Correct answer is A
No explanation has been provided for this answer.