= Let Martina's cousin's age be = n
= Let her age be = n+12
After four years,
Cousin's age = n+4
Her age = n+12+4=n+16
But according to the question her age = 3(n+4) = 3n+12
Thus,
3n+12=n+16
3n-n=16-12
2n=4
n=4/2
Thus ,
Her cousin's present age = n = 2
Her cousin's present age = n = 2Her present age = n+12 = 2+12=14
Answer:
35
Step-by-step explanation:
We are adding 8 and then subtracting 2
3, 11, 9, 17, 15, 23, 21
The 8th number is 21+8 = 29
The 9th number
Subtract 2
29-2 = 27
10th number
Add 8
27+8 = 35
Answer:
The exponent is 2
Step-by-step explanation:
2.5 x 10²
I mean you said it yourself, the exponent is the number above the ten meaning it is raised to that value.
So 2 is the exponent.
Answer:
49.47
Step-by-step explanation:
Take what she started with and subtract what she ended with
428.25 - 378.78
49.47
This is the amount she spent
5.55 = 5 55/100 = 555/100 = 111/20
