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ddd [48]
3 years ago
15

Write an expression that represents the area of a circle with radius 3x^3. (For any circle with radius r, a=π r^2 = π .r .r ^.)

Mathematics
1 answer:
aalyn [17]3 years ago
6 0

9514 1404 393

Answer:

  B. 9πx^6

Step-by-step explanation:

Putting the given radius into the area formula gives ...

  A = πr^2

  A = π(3x^3)^2 = π(3^2)(x^(3·2))

  A = 9πx^6

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Determine wether the ratios are proportional: 6/36 and 1/6
dangina [55]
They are proportional. If you divide 6/36 by 6 on the numerator and the denominator, you get the same fraction of 1.6.
3 0
3 years ago
True or false ???????????????please help
Dovator [93]
1  True   because 19^3  = 6859
2. False
3. True because 8000 ^1/3  can be written as 100^1/3 * 8^1/3
4 False 
5 True because they are both = 15

If you have a scientific calculator you can check these out yourself
7 0
3 years ago
76.8 of what is 40.32
bearhunter [10]
Hey there

Lets solve this question together,

Convert 76.8% to a decimal.

0.768 * x=40.32

Multiply 0.768 by x to get 0.768x.

0.768x=40.32

Multiply each term by 1 / 0.768 and simplify.

Cancel the common factor of 0.768.

x=40.32 / 0.768

Divide 40.32 by 0.768 to get 52.5

x=52.5
6 0
3 years ago
A haircut cost $15. I left a 20% tip. How much was the haircut including the tip? PLEASE ANSWER WITH WORK
Bas_tet [7]

Answer:

$18

Step-by-step explanation:

15*.2=3

15+3=18

The haircut is $18 with tip included.

6 0
3 years ago
Read 2 more answers
PLEASE HELP!!! The formula F =9/5 C + 32 expresses Fahrenheit temperature in terms of Celsius temperature. Find the Celsius temp
mrs_skeptik [129]

Answer:

The Celsius temperature is 5° when the Fahrenheit temperature is 41°.

Step-by-step explanation:

Given that:

F = \frac{9}{5}C + 32

Where,

F represents the temperature in Fahrenheit

C represents the temperature in Celsius

For calculating Celsius temperature from 41° Fahrenheit, we will put F=41 in given equation

41=\frac{9}{5}C+32

Subtracting 32 from both sides

41-32=\frac{9}{5}C+32-32\\9=\frac{9}{5}C

Multiplying both sides by 5/9

\frac{5}{9}*9=\frac{5}{9}*\frac{9}{5}C\\5=C\\

C = 5°

Hence,

The Celsius temperature is 5° when the Fahrenheit temperature is 41°.

6 0
3 years ago
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