Answer:
-2
Step-by-step explanation:

When you insert the given points you get


Than you multiply the first one by - 1 and sum it with the second to get rid of n

There are 16 girls and 12 boys which means the ratio of number of girls to the numbers of boys in her class is 16:12 and 4:3 when simplified.
Answer:
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Step-by-step explanation:
Answer:
120 meters
Step-by-step explanation:
18 ÷ 3 = 6
5 x 6 = 30
30 x 4 = 120