9 times 21 is 189
the answer is 189 inches
MARK AS BRAINLIST
Step-by-step explanation:
L = 6t+5
H = √t
A = L*H
= (6t+5) *√t = 6t√t + 5√t
A'(t) = 6t * 1/2*√t + √t * 6 + 5/2*√t
= 6t/2√t + 6√t + 5/2√t
The answer is b. It’s B because 28 is more
Answer:
Read below
Step-by-step explanation:
a) 
b)
(The reason both numerator and denominator can both be negative is because the negative cancel each other out and still simplify to
)