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aivan3 [116]
3 years ago
11

Suppose you have 30CD's. You know that you have 11 more CD's than your friend. Write and solve an equation to find the number of

CD's your friend has.
Mathematics
2 answers:
Serga [27]3 years ago
4 0

Answer:

30 - 11 = 19        19 CD's

Step-by-step explanation:


I am Lyosha [343]3 years ago
4 0

Answer:

30-11=x

x is what the friend has

or you can do x+11=30

x is what ur friend has still.

take the 11 over to the other side.

x=19

ur friend has 19 and you 30

19+11=30

Hope that helps!! :) Brainliest???



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3 years ago
How many yards are in 7 3/5 feet?
11Alexandr11 [23.1K]

Answer:

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Step-by-step explanation:

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8 0
3 years ago
Monica sells lemonade over the summer and uses conical paper cups to serve
Alina [70]

Answer: She would need 206 paper cups.

Step-by-step explanation: First of all, Monica has a 10-gallon container full of lemonade and this translates into 37850 cubic centimetres volume of lemonade. The conversion rate has been provided as one gallon equals 3785 cubic centimetres, therefore ten gallons would be 3785 times ten which gives you 37,850 cubic centimetres of lemonade.

Each cone shaped paper cup has a diameter measuring 8 centimetres and 11 centimetres in height. The radius of the cone shaped cup therefore is 4 centimetres (radius equals diameter divided by two). The volume of each cup therefore is given as;

Volume of a cone = (πr²h)/3

Volume of a cone = (3.14 * 4² * 11)/3

Volume of a cone = 552.64/3

Volume of a cone = 184.2

If each cone could hold 184 cubic centimetres of lemonade, then the entire ten gallons would require the following number of cone shaped cups;

Number of cups = Total volume/Volume of a cup

Number of cups = 37850/184.2

Number of cups = 205.48

Rounded to the nearest whole number, this becomes

Number of cups ≈ 206

Therefore Monica would need 206 cone shaped paper cups to empty the entire 10 gallons of lemonade.

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