Answer:
Step-by-step explanation:
Present age of Barry = b
Present age of sister = s
Barry is 8 years older than his sister means if we subtract 8 from present age of Barry both will be of equal age
s=b-8 ............(1)
In 3 years means we have to add 3 in their present age
s+3=b+3
then
he will be twice as old as
2(s+3)=(b+3
2s+6=b+3
2s=b+3-6
2s=b-3...............(2)
Put the value of s from (1) to (2), we have
2(b-8)=b-3
2b-16=b-3
2b-b=-3+16
b=13
Put the value of b in (1)
s=13-8
s=5
Present age of Barry = b = 13
Present age of sister = s = 5
Answer:
1 thus b: is the Answer
Step-by-step explanation:
Simplify the following:
(3 (15 + 4)^2 + 2 (20 + 5)^2)^0
(3 (15 + 4)^2 + 2 (20 + 5)^2)^0 = 1:
Answer: 1
Answer:
the answer is D
Step-by-step explanation:
Answer:
a=5
Step-by-step explanation:
a^2+b^2=c^2
c^2-b^2=a^2
13^2-12^2=a^2
169-144=a^2
25=a^2
5=a
The answer is B: 11.
To solve it, you need to solve the equation: 20.00=12.85+0.65x
