Step-by-step explanation:

Hope it will help :)
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Answer:
You can't find y in this way
Step-by-step explanation:
You should know the value of x
But you can say
Y=7x
Answer:
× 
Step-by-step explanation:
Using the rule of exponents
×
⇔ 
Given
, then
×
=
=
= 
Hello, answer is 10000000000000000
Greetings from Brasil...
Follow the reasoning.
288 ÷ 2 = 144
and 144 its a perfect square (144 = 12²)
It is visible that if we multiply 288 by 1/2, we will obtain a perfect square, but we will do this via a simple equation
288 · X = 144
X = 144 ÷ 288
X = 0,5 ⇔ X = 1/2