The smith family bought 10 gallons of ice cream for a party and 80% of ice cream bought was eaten how many gallons was eaten

Mathematics

2 answers:

Nadusha1986 [10]3 years ago

7 0

Answer:

8 gallons were eaten.

Step-by-step explanation:

You would multiply the percentage by the amount of gallons. So 80% would be 0.8 so it would be 0.8 multiplied by 10 which gives you 8.

sammy [17]3 years ago

7 0

Answer:

8 gallons because 80% if 10 is 8.

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100 points the right answer please the set designer for a play painted some background scenery on a large piece of plywood. He u

podryga [215]

Answer:

14 ft

Step-by-step explanation:

Focus on the triangle, and temporarily neglect the 2 ft measurement at the top of the triangle. Then the 2 legs of the triangle have lengths h - 2 ft and 5 ft, and the hypotenuse is 13.

Applying the Pythagorean Theorem, we get:

13^2 = (h - 2)^2 + 5^2, or

169 = h^2 - 4h + 4 + 25, or

144 = h^2 - 4h + 4, or

140 = h^2 - 4h, or, finally,

h^2 - 4h - 140 = 0. We must find the value of h.

I graphed this function on a calculator and found that -10 is a zero. Thus, the function factors into (h + 10)(h - 14) = 0, or h = 14.

The total height of the piece of plywood is 14 ft.

Check this: does a right triangle with legs (14 - 2) and 5 have a hypotenuse of 13? Yes.

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2 years ago

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insens350 [35]

9514 1404 393

Answer:

Step-by-step explanation:

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