2 years ago

PLEASE HELP I NEEED HELP ASAP

Mathematics

1 answer:

dolphi86 [110]2 years ago

6 0

Answer:

Step-by-step explanation:

Using the rule of radicals

$\sqrt{a}$ × $\sqrt{b}$ ⇔ $\sqrt{ab}$ and

$\sqrt{-1}$ = i

Given

$\sqrt{-80}$

= $\sqrt{16(5)(-1)}$

= $\sqrt{16}$ × $\sqrt{5}$ × $\sqrt{-1}$

= 4 × $\sqrt{5}$ × i

= 4i $\sqrt{5}$ → B

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2 years ago

Solve for x 21x+6 help please ?

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The perimeter of a 5 sided figure is 45.56 meters. Two of the sides have the same length. The sum of the other three side length

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