18. 6.5 meters of ribbon
19. 11.6 gallons of gas
20. 5 weeks
The answer would be 2 times whatever the value of x would be
The first 5 multiples of 15 are: 0, 15, 30, 45, 60
15x-10=20
+10 +10
15x=30
\15 /15
x=2
you add 10 to both -10 (they cancek eachother out) and 20 (equals 30)
Then you divide 30 by 15 (equals 2) and 15 by 15 (they cancel eachother out)
Then you get x=2
Answer:
24 cm squared
Step-by-step explanation:
