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mamaluj [8]
2 years ago
9

Simplify by using radical. Rationalize denominators. 2a^-1/2

Mathematics
1 answer:
ra1l [238]2 years ago
4 0

Answer:

\dfrac{2\sqrt{a}}{a}

Step-by-step explanation:

2a^{-\frac{1}{2}} =

= 2 \times \dfrac{1}{\sqrt{a}}

= 2 \times \dfrac{1}{\sqrt{a}} \times \dfrac{\sqrt{a}}{\sqrt{a}}

= \dfrac{2\sqrt{a}}{a}

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Anyone know how to check solution, please help if u do
Ivenika [448]
Let's check your answer. To do this, you would simply plug your answer into the equation and see if it works. 
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5(3 - 3) - 2(3 - 2 × 3) = 6

The equation works! 

Y = 3

Great work!

3 0
3 years ago
Which situation can be represented by Y= 12x - 4?​
andrey2020 [161]

Answer:

D. The number of eggs , y, in x, dozen eggs for sale after 4 dozen eggs are sold

Step-by-step explanation:

The correct answer is D

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2 years ago
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Find a cosine ratio of angle o.
MissTica
Cosine(O) = Adj / Hypo

Plug in numbers to find the ratio

Hope it helps
7 0
3 years ago
15% of R560 - 15% of R500 is:​
Dahasolnce [82]

15% of R560 - 15% of R500

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=> 0.15 × 60

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8 0
2 years ago
Find the exact value by using a half-angle identity. . cos(5π/12).
vodka [1.7K]
<span>First of all in order to find the exact value by using a half angle identity we will do
cos(5π divided by 12)

=cos (5π divided by 6) divided by 2
= ± Under root[(1+cos (5π divided by 6) divided by 2]
Now we will consider + sign because 5π divided by 12 is in quadrant. where cos>0
so the solution is [(1- Under root 3 divided by 2) divided by 2] 
We will ignore the negative sign
I hope it helped.</span>
6 0
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