Answer:
7/15 is the probability of selecting a boy and a girl.
Step-by-step explanation:
Combination = nCr = n!/((n-r)!r!)
((7C1)(3C1))/(10C2)
= (7*3)/45
=21/45 = 7/15 the probability of selecting a boy and a girl.
Answer:

Step-by-step explanation:
The Pythagorean Theorem states that if you square the two legs and take the square root of the two legs, then you get the hypotenuse.
9^2+4^2
=81+16
=97
= 
Hope it helped!
Answer: 18
Step-by-step explanation:
formula for volume of right square pyramid- area of the base * h/3 = volume
so, volume/ area of the base = 1/3 of height
300/50= 6. multiply your answer by 3 to get the full hight. 6*3= 18
your answer is 18 :)
I don’t rlly get what you mean but surely it’s -9.28