There was 45 combinations of 2 so
xC2 = 45 where x = number of players
10C2 = (10*9) / 2 = 45
So there were 10 players involved
Answer:
15 in orchestra, 30 in band, and 74 in choir = 119
Step-by-step explanation:
15 orchestra
15*2=30
37+37=74
15+30+74=119
<em>Answer:</em>
a = 7 & a = −7
<em>Explanation:</em>
Rewrite the equation as
(x+a)(x−a)=x^2−49
Simplify (x+a)(x−a)
x^2−a^2=x^2−49
Move all terms not containing a to the right side of the equation.
−a^2=−49
Multiply each term in −a^2=−49 by −1
a^2=49
Take the square root of both sides of the equation to eliminate the exponent on the left side.
a=±√49
The complete solution is the result of both the positive and negative portions of the solution.
a=7,−7
R = 1/2 d = 1/2 x 8 = 4 cm
V=πr2h
= π x 4^2 x 20
=3 x 16 x 20
= 960 cm^3
ans : 960 cm^3
Answer:
KV=21
Step-by-step explanation:
