Answer:
C. 16
Step-by-step explanation:
Brother - b years now.
Sister - s years now.
A brother is 12 years older than his sister.
b - s = 12
(b - 4) - brother 4 years ago.
Four years ago, the brother was 3 times as old as the sister is now.
b - 4 = 3s
b - s = 12 ----> s = b - 12
b - 4 = 3s
b - 4 = 3(b - 12)
b - 4 = 3b - 36
36 - 4 = 3b - b
32 = 2b
b = 16
Answer:
9h² + 51h + 28
Step-by-step explanation:
(5h + 4)(4h + 7)
=> 9h² + 35h + 16h + 28
=> 9h² + 51h + 28
Therefore, 9h² + 51h + 28 is the simplified expression.
Hoped this helped.
Answer:
40 cm^2
Step-by-step explanation:
Answer:
-irrational
-rational
-rational
-irrational
__________________________________________________________quick and easy way is to see if the squares are perfect squares, like square root seven is irrational, so the answer is irrational. square root 9 is 3, which is rational, so its rational.
brainliest is appreciated :)
Answer:
x,x,12,12 ( for the paragraph part)
Step-by-step explanation:
