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
Softa [21]
3 years ago
8

If the area of the circle is 97.9 units squared, what is the radius?

Mathematics
1 answer:
mote1985 [20]3 years ago
6 0

Answer:

r = 5.58

Step-by-step explanation:

The area of a circle is given by

A = pi r^2

97.9 = 3.14 r^2

Divide each side by 3.14

97.9/3.14 =3.14 /31.4 r^2

31.17834395 = r^2

Take the square root of each side

sqrt(31.17834395) = sqrt(r^2)

5.583757153 = r

You might be interested in
How many kilograms are in a gram​
andreev551 [17]

Answer:

There are 0.001 kilograms in a gram.

7 0
4 years ago
Read 2 more answers
Jamal's lunch costs $8.95, plus 6.5% sales tax. What is the total cost of Mama's lunch, including sales tax?
Nezavi [6.7K]
$8.95 + 6.5% = $ <span>9.53 </span>
8 0
3 years ago
Read 2 more answers
PLEASE HELP ME, I REALLY NEED A GOOD GRADE. TO WHOEVER GETS IT I WILL MAKE YOU BRAINLIST!
Aliun [14]

Answer:

(5x - 7) + 9x

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Help solving this derivatives problem please?
victus00 [196]

Answer:

  -2^80·sin(2x)

Step-by-step explanation:

First of all, the problem can be simplified a bit by recognizing the symmetry of the sine function:

  sin(-2x) = -sin(2x)

Then, you need to recognize the "periodic" nature of the derivatives of the sine function:

\dfrac{d}{dx}(-\sin{(2x)})=-2\cos{(2x)}\\\\\dfrac{d^2}{dx^2}(-\sin{(2x)})=2^2\sin{(2x)}\\\\\dfrac{d^3}{dx^3}(-\sin{(2x)})=2^3\cos{(2x)}\\\\\dfrac{d^4}{dx^4}(-\sin{(2x)})=-2^4\sin{(2x)}

That is, the coefficient of x gets raised to the power of the derivative number, and the function (sin, cos) cycles with a repeat of 4. Thus, the 80th derivative is ...

 -2^80·sin(2x)

6 0
4 years ago
Only answer if you will help thank you
borishaifa [10]

Answer:

$22,000

Step-by-step explanation:

Subtract the development cost from the amount it would make.

And boy, that's one expensive mousetrap.

7 0
3 years ago
Other questions:
  • Which of the following represents the factorization of trinomal below
    10·1 answer
  • 2. In a random sample of 130 World Campus students, 92 were employed full-time.
    9·1 answer
  • What are the solutions of the equation 2x2−x=32x2-x=3?
    13·1 answer
  • 3(4)<br> Solve 3(x-9)=21
    11·2 answers
  • The graph shows the relationship between time and distance is Pam rides her bike. During which time period was the rate of chang
    13·2 answers
  • A bag of candies contains 5 candies that are orange. The probability of reaching into the bag, taking 1 candy from the bag witho
    14·1 answer
  • Johns goal is to have more then -7 dollars in his bank account by the end of the month.
    8·2 answers
  • For every 5 red flowers in my garden, there are 10 yellow flowers. There are 81 flowers in my garden in total (red and yellow fl
    6·1 answer
  • \begin{aligned} 4{,}570=&amp; 4 \text{ thousands} + 5 \text{ hundreds} + 7 \text{ tens} \\\\ 4{,}570=&amp; 3 \text{ thousands} +
    13·1 answer
  • 9.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!