I: 635=dimes*10+quarters*25
or shorter
635=d*10+q*25
II: d=q*3+3
Substitute II (d=3q+3) into I to replace d:
635=d*10+q*25
635=(3q+3)*10+q*25
635=30+30q+25q
605=55q
11=q
-> 11 quarters
"What expression represents the number of dimes if q represent quarters"
insert q=11 into II:
II: d=q*3+3
d=11*3+3
d=33+3
d=36
Answer:
12y+9
Step-by-step explanation:
Answer:
I looked it up and it said #3 is an integer #4 is a negitive integer
Step-by-step explanation:
Answer: 28
cuz of PEMDAS
you do 2^3 first, which is 8. then multiply 8*3 which is 24. then 24 + 4 is 28
hope this helps!