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Eva8 [605]
2 years ago
10

Find the circumference of each circle. Use 3.14 or 22/7 for π. Round to the nearest tenth, if necessary.

Mathematics
1 answer:
zhuklara [117]2 years ago
7 0

c \:  = \pi \:  \times diameter \\  \:  \:  \:  \:  \:  \:  =  \frac{22}{7}  \times 20 \: inches \\  =  \: 62.9 \: inches

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3 years ago
A customer orders a round of coffee for her friends. If she orders two 12-ounce cups and one 16-ounce cup, she will owe the coff
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Answer:

D.$3.95

Step-by-step explanation:

Let us represent

12-ounce cup = x

16-ounce cup = y

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Hence:

2x + y = 10.75.....Equation 1

y = 10.75 - 2x

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We substitute 10.75 -2x for y in Equation 2

x + 2(10.75 - 2x) = 11.30

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Collect like terms

x - 4x = 11.30 - 21.50

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Solving for y

y = 10.75 - 2x

y = 10.75 - 2($3.40)

y = 10.75 - 6.8

y = $3.95

Therefore , 16-ounce cup is represented by y, the cost for a 16-ounce cup of coffee is $3.95

Option D is correct

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