Find the missing value. Hint: Use the number line to find the missing value.
-4 -
9
{
--15
开
15
-10
-5
0
5
10

Prove that 3: 8 is equivalent to 12: 32.a. use diagrams to support your answer.

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Shannon mary and john earn a weekly allowance ahannon earns the amount that is 2/3 of what john earns mary earns an amount that is 1 2/3 of what johns earns 20 dollars a week who eaens the greatest allowance and who earns the least