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Liono4ka [1.6K]
3 years ago
9

A certain company changes for teling a rectangular room include the cost of the material used and a flat rate of instalitation.T

e lenght of certain room is 2 fett more than with,and the company's chrages,in dollars,for tiling the room are 12.5x(x+2)+400
Mathematics
1 answer:
nika2105 [10]3 years ago
5 0

Answer:

nknknStep-by-step explanation:

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A restaurant makes pizzas with 6-inch diameters ad 12-inch diameters. Which of the following statement is true?
a_sh-v [17]

Answer:

The correct option is c: the area of the 6-inch pizza is 1/4 the area of the 12-inch pizza.

Step-by-step explanation:

The area (A) of each pizza is given by:

A = \pi r^{2}

Where:

r: is the radius

For the 12-inch pizza we have:

A_{12} = \pi (\frac{12 inch}{2})^{2} = 113.1 inch

And for the 6-inch pizza we have:

A_{6} = \pi (\frac{6 inch}{2})^{2} = 28.3 inch

The ratio between A₆ and A₁₂ is:

\frac{A_{6}}{A_{12}} = \frac{28.3 inch}{113.1 inch} = 0.25 = \frac{1}{4}

Hence:

A_{6} = \frac{A_{12}}{4}

Therefore, the correct option is c: the area of the 6-inch pizza is 1/4 the area of the 12-inch pizza.

I hope it helps you!            

4 0
3 years ago
Help me i don't understand the problem
Mashutka [201]
The question is asking you to find out what number is a fraction of something. For example, the problem on the top right is asking 35 is 50% (one half) of a number so what you have to do is multiply 35 times 2 and the answer is 70
5 0
3 years ago
What is the solution of 9x-8=34x-12
Cerrena [4.2K]

Answer: x = 2/13

Step-by-step explanation:

9x-8=34x-12

Add 12 on both sides and you get

9x+4=34x

Subtract 9x from both sides and you get

4=26x

Divide 26 from both sides to get

X= 4/26

Simlify

x = 2/13

4 0
3 years ago
A map has the scale 1/3inch = 8 miles. If city a and city b are 12 inches apart on my map then how far apart are the city’s in r
Feliz [49]
The equation would be
12 ÷ 1/3 =
12 x 3/1 =
12 x 3 =

36 miles
6 0
2 years ago
Translate "the product of z,x, and y"<br> into a mathematical expression
Nataliya [291]

z*x*y

Product means multiply

5 0
3 years ago
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