Answer:
60
Step-by-step explanation:
since its a square, and has four sides then you would divide total length by four to find the length of each side
Answer:
x=0
Step-by-step explanation:
4/8=1/2, so:
x+1/2=1/2
x=0
Answer:
12 years younger.
Step-by-step explanation:
Let Jan's age be J and Karyn's age be K.

Jan's age 8 years ago is 2/5 of Karyn's age 4 yeaRs from now.

=> 
=> 4K = 48 X 3
=> K= 36.
=> J= 24.
So Jan is 12 years younger.
Answer:
17−7
Step-by-step explanation:
Hope this helped good luck in your work!
Answer:
60 marbles in total
Step-by-step explanation:
Find how many marbles there are in total by dividing 42 by 0.7:
42/0.7
= 60
So, there are 60 marbles in total