Answer:
Step-by-step explanation:
5/3=1/n(do cross multiplication)
3*1=5*n
3=5n
3/5=n
Answer:yes
Step-by-step explanation:
Each of their corners are at a 90* angle
Answer:
since the unknown amount can buy 100 pencils
he bought 70 pencils
therefore $4.50 can buy 30 pencils
so 1 pencils cost $4.50 /30=0.15
Answer:
9+x<12
Step-by-step explanation:
add 9 to an unknown number.
9+x
use the < less than symbol (instead of an equal sign) and write 12.
