A ≥ 0

$-\not9^3\sqrt{28a^2}*\frac{1}{\not3^1}\sqrt{63a}=\\\\ =-3a\sqrt{4*7}*\sqrt{9*7a}=\\\\=-3a*2\sqrt{7}*3\sqrt{7a}\\\\ =-18a\sqrt7*\sqrt 7*\sqrt a=\\\\=-18a*(\sqrt7)^2*\sqrt a =\\\\ =-18a*7*\sqrt a=\\\\ =-126a\sqrt a$

8 0

3 years ago

Henlo please help!?! Thanks!!<br> ASAP? :D

erik [133]

Answer:

6 feet

Step-by-step explanation:

Volume = w × h × l

120 = 4 × 5 × l

l = 120 / 20

l = 6 ft

4 0

3 years ago

Read 2 more answers

Help meeeeeeeeeeeeee pleaseeeeeeeeeeeeeeeeeeeeeeeeee

Sati [7]

Answer:

Step-by-step explanation:

8 0

1 year ago