Answer:
Aaliyah is 18years old now
Step-by-step explanation:
let AJ's age=x
Aaliyah's age=3x
Four years ago,
AJ's age=x-4
Aaliyah's age=3x-4
3x-4=7(x-4)
3x-4=7x-28
3x-7x=-28+4
-4x=-24
x=6
Aaliyah's present age=3x=3×6=18
Rearrange
to give
Let
be a variable 'p' and so we can write
as
Rewrite the equation in terms of 'p'
where
using the quadratic formula
and subsitute the value of
There are two value of p; 125 and -27
Now we find the value of x
Earlier we substitute
for
and
for
When
,
When
So the final answer is the two values of x;
x = 5 OR x = -3
Answer:
6
Step-by-step explanation:
10-4=6
Answer:
It will be 0.2
Step-by-step explanation:
Hope this Helped
Answer:
$8,046
Step-by-step explanation:
9% of 89,400 = 8046
That's how much he earned.