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agasfer [191]
3 years ago
14

Antonio has a total of 55 marbles. He has 15 green marbles and 12 red marbles. The rest of the marbles are blue. How many blue m

arbles does he have?
A student solves this problem by writing an equation. Which strategy could help check the student’s answer?
Mathematics
1 answer:
dedylja [7]3 years ago
5 0
Step 1: Create Equation: 12+15+x=55

Step 2: Solve it: you will get x=28

Step 3: You could check it by plugging your answer in.

Hope that helps!!!
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Area of square = 20 * 20 = 400
Area of circle = </span><span>π(10)² = 100</span><span>π = 314

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Hope this helps!
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