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
myrzilka [38]
3 years ago
15

What is the area of a circle with radius of 3 inches? Use pie =3.14 A .18.84 square roots B .28.26 square roots C .9.42 square r

oots D .113.04 square roots
Mathematics
1 answer:
tatiyna3 years ago
3 0

Answer:

B. 28.26

Step-by-step explanation:

First you have to find the circumference:

R²= 3²=9

Then you multiply your circumference by 3.14 to get you answer:

9·3.14=28.26

You might be interested in
ms. reynolds, the math teacher, was disappointed to announce that only 22% of her 68 students passed an exam. How many students
Ratling [72]
Either a student passes an exam or fails it. that means the percentage of students who pass plus the percentage of students who fail must add to 100%. this also means that if 22% pass, then 78% fail. there are 68 students total and 78% fail so the number of students failing is:
(78/100)(68) = 53.04 which is approximately 53 students.

let me know if you have any questions!!!!
3 0
2 years ago
Anyone know how to do these?
Allushta [10]

Answer:

1.4x10^-7

Step-by-step explanation:

For Problem 6

First we would divide the first numbers together so 7.84 / 5.6 = 1.4

We then would add the exponenites together so -3+-4=-7

Leading our awnser to be 1.4x10^-7

6 0
3 years ago
The value of C has to be Greater than 0.65
grin007 [14]

Answer:

1.3

Step-by-step explanation:

1. .65 = .5c ---> .65/.5

2. 1.3 = c

4 0
2 years ago
What is the formula for calculating a residual value
Ksivusya [100]
The formula to figure residual value follows: Residual Value = The percent of the cost you are able to recover from the sale of an item x The original cost of the item. For example, if you purchased a $1,000 item and you were able to recover 10% of its cost when you sold it the residual value is $100!!
7 0
2 years ago
Read 2 more answers
please help! functions and relations. f(x)= square root of x-4. find the inverse of f(x) and it’s domain.
likoan [24]

ANSWER:

\:D.\text{ }f^{-1}\left(x\right)=\left(x+4\right)^2;x\ge-4

STEP-BY-STEP EXPLANATION:

We have the following equation:

f(x)=\sqrt{x}-4

The inverse is the following (we calculate it by replacing f(x) by x and x by f(x)):

\begin{gathered} x=\sqrt{f^{-1}(x)}-4 \\  \\ \sqrt{f^{-1}(x)}=x+4 \\  \\ f^{-1}(x)=(x+4)^2 \end{gathered}

The domain would be the range of the original equation, and it would be the range of values that f(x) could take, which was from -4 to positive infinity, that is, f(x) ≥ -4.

Therefore, the domain is x ≥ -4.

So the correct answer is D.

\:f^{-1}\left(x\right)=\left(x+4\right)^2;x\ge -4

4 0
8 months ago
Other questions:
  • How do we find the range
    13·1 answer
  • Which of the following steps is included in the construction of a perpendicular line through a point on a line?
    10·1 answer
  • Average Monthly Temperature Month Temperature January 45 degrees February 42 degrees March 54 degrees April 62 degrees May 78 de
    8·1 answer
  • What is the value of x?
    12·1 answer
  • You buy a pair of shoes<br>for $58.75, what is the<br>Price including tax?<br>(tax is 7.5%)​
    11·2 answers
  • Help^0^
    11·1 answer
  • I found x by doing cross multiplication. But I’m not sure how to find Y. Can anyone help?
    12·1 answer
  • ⚠️PLEASE HELP IT IS AN EMERGENCY⚠️
    5·1 answer
  • Car World is selling cars for 20% of the original price, x. The dealership is also offering an additional decrease of $500, what
    13·1 answer
  • The Jones family plans a trip to the amusement park and purchase a family package for $128.00. They also want to but lunch and s
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!