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fgiga [73]
3 years ago
11

A local pizzeria sold 55 pizzas yesterday.

Mathematics
2 answers:
LUCKY_DIMON [66]3 years ago
7 0
The answer is 66 for the total plus the bonus, the bonus equals 11 pizzas. It is because 55 x (1+20%)= 66 and 11. Meaning 55 pizzas times 1 + 20% equals 66, so it means that the bonus was 11 pizzas and the total that day is 66.
Luba_88 [7]3 years ago
4 0

Answer:

11

Step-by-step explanation:

20 percent *55 =

(20:100)*55 =

(20*55):100 =

1100:100 = 11

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Answer:

A=\frac{225t^2}{\pi} given the circumference is 30t.

Step-by-step explanation:

The circumference of a circle is C=2\pi r and the area of a circle is A=\pi r^2 assuming the radius is r for the circle in question.

We are given the circumference of our circle is 2 \pi r=30t.

If we solve this for r we get: r=\frac{30t}{2\pi}.  To get this I just divided both sides by 2\pi since this was the thing being multiplied to r.

So now the area is A=\pi r^2=\pi (\frac{30t}{2 \pi})^2.

Simplifying this:

A=\pi (\frac{30t}{2 \pi})^2.

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A=\pi (\frac{15t}{\pi})^2.

Squaring the numerator and the denominator:

A=\pi (\frac{(15t)^2}{(\pi)^2}

Using law of exponents or seeing that a factor of \pi cancels:

A=\frac{(15t)^2}{\pi}

A=\frac{15^2t^2}{\pi}

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