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3 years ago

How much pizza souce is needed to cover a 16” pizza? (Note 16” is the diameter of the pizza)

Mathematics

1 answer:

gayaneshka [121]3 years ago

5 0

Answer:

201.06 or 200.96

Step-by-step explanation:

Use the first answer if you were asked to answer with π and use the second one if you were asked to use 3.14 if your teacher didn't specify use the first one.

To find the area of a circle you use π r² or π multiplied by the radius squared the diameter (which is what we are given) in this case is 16" so you would divide it by two giving you 8 then square 8 giving you 64 and then do π64 or π(8²). A way my teacher helped us learn these equations is with a really cool song, its called The Circle Song look it up online, I hope it helps!

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jolli1 [7]

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3 years ago

Read 2 more answers

Jeff has $1.35 in nickles and dimes. He has a total of 15 coins. How many of each coin does he have?

dlinn [17]

For this case we propose a system of equations.

We know that a dime equals 10 cents and a nickel equals 5 cents.

So:

x: Let the variable that represents the number of dimes

y: Let the variable that represents the number of nickels

According to the statement we have:

$x + y = 15\\0.10x + 0.05y = 1.35$

We multiply the first equation by -0.10:

$-0.10x-0.10y = -1.5$

We have the following equivalent system:

$0.10x + 0.05y = 1.35\\-0.10x-0.10y = -1.5$

We add the equations:

$0.10x-0.10x + 0.05y-0.10y = 1.35-1.5\\-0.05y = -0.15\\y = \frac {-0.15} {- 0.05}\\y = 3$

So, Jeff has 3 nickels

$x + y = 15\\x + 3 = 15\\x = 15-3\\x = 12$

Jeff has 12 dimes.

Answer:

12 dimes and 3 nickels

4 0

3 years ago

Need help will mark brainiest thank you

Nadusha1986 [10]

a. 1^5 = 1 × 1 × 1 × 1 × 1 = 1

b. 2 × 2 × 2 × 2 × 2 = 2^5 = 32

c. 20^3 = 20 × 20 × 20 = 8.000

d. 7 × 7 × 7 × 7 = 7^4 = 2.401

6 0

2 years ago

What is the height of the box

PSYCHO15rus [73]

Answer:

8 in

Step-by-step explanation:

since the box is the same length in all sides, it is a cube.

length, width and height are all the same.

the volume is 512 in³.

and the volume of a cube is length×width×height = side length³.

512 = length³

length = 8 = width = height

7 0

3 years ago

Describe a situation that fits each equation. Describe more than one situation for each equation, if possible.

lisabon 2012 [21]

Answer:

Step-by-step explanation:

4x − 1 = 19

solving for x, x = 5

2x − 4 = 10

x=7

2x + 2y = 48

x=24-7

y=24-x

5x + 2y = 90

x=18-2y/5

y=45-5x/2

all the situations I could find hope this helps for each equation.

4 0

2 years ago