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Korolek [52]
3 years ago
12

PLEASE HELP 10 Points!!!!

Mathematics
1 answer:
lidiya [134]3 years ago
3 0
Soccer ball = a = 5
basketball = b = 9
volleyball = c = 7

a + b + c = 21
2a + c = 17
2b + c = 25
2a + b + c = 26

Seeing that....
a + b + c = 21
2a + b + c = 26
We can deduce that a = 5

2a + c = 17
2(5) + c = 17
10 + c = 17
Subtract 10 from both sides
c = 7

2a + b + c = 26
2(5) + b + 7 = 26
10 + b + 7 = 26
17 + b = 26
Subtract 17 from both sides
b = 9

Hope this helped!
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Gekata [30.6K]
 first divide 90 by 4 to see how many words per minute

90 ÷ 4 = 22.5

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so your answer is;

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Question 24
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Evaluate.<br><br> 21 ÷ 7 + 20 • 102 • 2 – 3
mrs_skeptik [129]
To avoid confusion, remember PEMDAS. This is the order of operation.
Parenthesis, Exponents, Multiply, Divide, Add, Subtract

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Then, do addition

3 + 4080 = 4083

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So, 21 ÷ 7 + 20 * 102 * 2 - 3 = 4,080
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Mark has 23 feet of string. He will cut the string into equal lengths of 9 inches each. How much string will be left after he cu
Elza [17]

Convert foot to inches:

1 foot = 12 inches

23 feet ⇒  23 feet × 12 inches/ft = 276 inches

Divide:

276 ÷ 9 = 30 pieces with remainder

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ANSWER: There will be 6 inches long remaining in length after cutting the string into 30 pieces equal lenght of 9 inches each.

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