1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
storchak [24]
3 years ago
9

The question is below

Mathematics
2 answers:
Setler79 [48]3 years ago
8 0

So we know the area of a circle is πr^2, which means:

π * r^2.

π = pi

r = radius

So we know the values of π and r, so we can plug them in:

π * r^2

3.142 * 21^2

3.142 * 441 = 1385.622

Therefore, the area of the circle is 1385.622

Sonbull [250]3 years ago
7 0

Answer:

1385.622 cm^2

Step-by-step explanation:

The area of a circle is given by the formula

A = pi * r^2

We know the radius is 21 and pi is approximated by 3.142

A = 3.142 * 21^2

A = 3.142 *441

    1385.622 cm^2

You might be interested in
Please help with this question.
rusak2 [61]
I don’t know the answer but i wish you the best of luck!
6 0
4 years ago
Dividing and Multiplying functions
Likurg_2 [28]
Ok, so first of all, you need to plug the functions into their places. Since f(x) = 6x and g(x) = x + 3, you'll plug them in accordingly:
(6x) * (x + 3).

Then you'll multiply them together to get 6x^2 + 18x. You can't combine like terms then because of the square in the first term.

So your final answer is 6x^2 + 18x.

I hope this helps you at least a little bit. Thanks for your time!
4 0
4 years ago
you have returned some merchandise to a store and received a store credit of $23. in the same store' you are purchasing picture
dmitriy555 [2]

Answer:

$40

Step-by-step explanation:

If you were to purchase 7 picture frames, you would replace x in the equation with 7, this is shown below.

<u>f(x)=9x-23 ---> f(x)=9(7)-23</u>

Now we can solve for f(x). First start with 9(7).

<u>f(x)=9(7)-23 ---> f(x)=63-23</u>

Now finish the last part by subtracting 23 from 63.

<u>f(x)=63-23 ---> f(x)=40</u>

This means that you would have to pay $40 dollars to purchase the 7 picture frames.

3 0
3 years ago
Find the supplement of an angle whose measure is 164 degrees. 180 164 74 16
Wittaler [7]
The supplement of the angle is 16.

To find a supplement, you take the measure of the angle you know and subtract that from 180. So 180-164=16.

Hope this helps! :D
6 0
3 years ago
A community sports league is raising money by making custom shirts to sell at league games. They plan to sell the shirts for $13
SSSSS [86.1K]

Answer:

B. (13-6) n - 55

Step-by-step explanation:

The number of shirts to be sold is n

The cost to purchase one shirt is $13

The cost of making each shirt is $6

Let's assume the shirt is one

Profit for a Shirt = (13-6)

But then there are no number of shirts

Profit= (13-6)n

But then also, an advert was run for the total shirts combined

Profit= (13-6)n -55

6 0
3 years ago
Other questions:
  • 21<br> 22<br> 01:39:07<br> The cost, c, of a ham sandwich at a deli varies directly with the number of sandwiches, n. If c = $54
    9·1 answer
  • Solve the inequality:<br> -40 &lt; 2(a + 12).
    14·1 answer
  • Big Bear Ski Resort offers two new “Snowboard Instruction” packages – Package A gives you 4 individual snowboard lessons for $15
    11·1 answer
  • What is 2.7 x 10 to the 5th power
    7·2 answers
  • What's the answer ??!!
    12·1 answer
  • Kyle is 4 times older than liam. in six years kyle will be 2 times older than liam. how old are they now?
    15·2 answers
  • A force of $20$ newtons will stretch a spring $5$ centimeters. What is the total number of centimeters that a force of $60$ newt
    7·1 answer
  • What is the factored form of 30x2 - 25x -30?
    6·1 answer
  • Andrew wants to buy a smart phone that costs $500.
    13·1 answer
  • an open box is to be made from a two-foot by three-foot rectangular piece of metal by cutting equal squares from the corners and
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!