Answer:
The answer is 9/2 or decimal form is 4.5 i gave you the work in the screenshot below hope it helps :)
Step-by-step explanation:
If, in 7 years, Susan will be 2 times as old as she was 3 years ago, what is Susan’s present age?
1 answer:
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The equation y= 2 has one real root and that is x=-1.
What is real roots of the equation?
We are aware that when we resolve a linear or quadratic equation, we always arrive at the value variable of the equation, or, to put it another way, we always locate the equation's solution. This "solution" is what we refer to as the real roots. For instance, when the equation -7x+12=0 is solved, the actual roots are 3 and 4.
Here given,
=> y = 2
Take y=0 then,
=> 2=0
=> =0
=>(x+1)=0
=> x=-1
Hence the given equation has one real root and that is x=-1.
To learn more about real roots refer the below link
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