Since Mark's brother is five years older than Mark and their combined ages add up to 23 than Mark must be 9.
Since 9 + 14 = 23, and 14 - 9 = 23
Mark brother is 14 but Mark is 9
Mark is 9 years old.
Hope this helps :0
Answer:
The equation is
Kyle has had cable for 8 months.
Step-by-step explanation:
Let m denotes number of months cable services have been used.
Initial charge for the cable box = $199
Setup fee = $49
Monthly charges for cable services = $79
Also,
Total bill over a certain number of months, m = $880
Therefore,
Now solve the equation.
That is Kyle has had cable for 8 months.
Answer:
3i √3
Step-by-step explanation:
you can't have the square root of a negative number
so we use "i"