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asambeis [7]
3 years ago
11

Sue baked cookies for a school fundraiser. She sold three-fourths of the cookies during the first two hours of the fundraiser. S

he sold one-third of the remaining cookies during the next hour. If Sue had 12 cookies left, how many cookies did she bake?
Mathematics
1 answer:
Charra [1.4K]3 years ago
6 0
The answer is she as 21 cookies left to sold until she is done in the fundraiser that her school is having.
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Answer:

Base = x = 18ft

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Step-by-step explanation:

The formula for the area of A the triangle is given by the following equation:

1) A = (base * heigth)/(2)

From this problem, we know that

base = x and that the height is 4ft less than the base, so height = base - 4 = x - 4.

We also know that the area is 126ft², so A = 126 ft². Now we can replace these informations in equation 1).

126 = (x(x-4))/2

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x² -4x - 252 = 0

The roots of this equation are x = 18 or x = -14. But we know that a triangle cannot have negative dimensions, so we use x = 18.

The base is x, so base = 18ft.

Height is 4ft less than the base, so height equals 18-4 = 14ft

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3 years ago
Mary Palm's checking account had a starting balance of $785.63. She wrote a check for $57.00 for groceries and a check for $125.
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A bag contains tiles. 3 tiles of red, 6 tiles of green, 3 tiles are blue. A tile will be randomly selected from the bag. What is
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Step-by-step explanation:

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