Answer:
A
Step-by-step explanation:
divide 80 by 3 and then multiply answer by 15
6*3 = 18
6*9 = 54
so 18 +54 is the correct answer
162.15 is the answer because you have to multiply 0.15•141 then add 21.15 to the 141 :)
Answer:
02:3 and 12:18
Step-by-step explanation:
A proportion is formed when the larger ratio can be simplified to equal the smaller ratio:
#1
02:3 and 4:12
Reducing the larger ratio: 4:12=1:3
Hence, not a proportion.
#2
02:3 and 6:12
Reducing the larger ratio: 6:12=1:2
Hence, not a proportion.
#3
02:3 and 12:18
Reducing the larger ratio: 12:18=2:3
Hence, they form a proportion.
#4
02:3 and 12:18
Reducing the larger ratio: 12:36=1:3
Hence, not a proportion.