Answer:
5a-25=70
5a=70+25
a=95/5
a=19
Step-by-step explanation:
since a(b+c) = ab+ac
Answer:
Step-by-step explanation:
Let the volumes of both the spheres be 
and their radii be 
respectively.
(given)
From equations (1) & (2), we have:
Thus, the ratio of the volumes of two spheres would be 2197 : 729.
It's not an arithmetic sequence.
Answer:
The probability of another chance event is 0.75
Step-by-step explanation:
We are given that the probability of a chance event is 0.25
We are supposed to find probabilities of another chance event
we know that Sum of all probabilities is 1
Let x be the probabilities of another chance event
So, x+0.25=1
x=1-0.25
x=0.75
So, probabilities of another chance event = x = 0.75
Hence the probability of another chance event is 0.75
