Answer:
of marbles,x 7.5cm height of water, Y
Step-by-step explanation:
Cary's age is 9 years MORE than Dan's age.
Cary's age is Dan's age, but with 9 more years added to that.
Here is how we can express that,

In 7 years, Cary will be C+7 years old,
and Dan will be D+7 years old.
In 7 years, the sum of their ages,
(C+7) and (D+7) will equal 93.
Here is how we can express that:

You have a system of two equations involving two unknowns. You have a couple of nice options here. You can apply substitution or elimination to complete the problem.
Answer:
ttthrhtghfhgfgfhgfhghg
Step-by-step explanation:
Answer:
x = 13 cm
Step-by-step explanation:
Answer:
the answer is c
Step-by-step explanation:
45% of 1500=675
38% of 1500=570
675+570=1245
1500-1245=255