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2 years ago

PLEASE HELP ITS DUE TODAY!!

Mathematics

2 answers:

kicyunya [14]2 years ago

7 0

Answer:

In the explanation I'm 80% sure it's this

Step-by-step explanation:

4 quarters in the pizza so

18 divided by 4= 4.5

4.5 rounded is 5 so she will need 5 pizzas because you can't buy 4 1/2 pizzas.

10*5= 50 so she will need to spend 50$ on the pizza.

Lena [83]2 years ago

3 0

Answer:

a) 5 pizzas need to be ordered and half of a pizza will be left over aka 0.5

b) $45

Step-by-step explanation:

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D. What is the approximate cost of siding that will be needed to cover the outside of the

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3 years ago

Read 2 more answers

An equilateral triangle has a perimeter of 48 cm. What is the area?

KiRa [710]

Answer:

$A=64\sqrt{3}\ cm^2$

Step-by-step explanation:

we know that

An <u><em>equilateral triangle</em></u> has three equal sides and three equal interior angles (each interior angle measure 60 degrees)

The perimeter is equal to

$P=3b$

where

b is the length side of the equilateral triangle

we have

$P=48\ cm$

substitute

$48=3b$

solve for b

$b=48/3\\b=16\ cm$

Find the area

The formula of area applying the law of sines is equal to

$A=\frac{1}{2}b^2sin(60^o)$

substitute the value of b

$A=\frac{1}{2}(16)^2sin(60^o)$

$sin(60^o)=\frac{\sqrt{3}}{2}$

$A=\frac{1}{2}(16)^2(\frac{\sqrt{3}}{2})$

$A=64\sqrt{3}\ cm^2$

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