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
stich3 [128]
3 years ago
10

When the radius of a circle is multiplied by a factor of 2 22, by what factor will the area of the circle change?

Mathematics
1 answer:
MAXImum [283]3 years ago
6 0
A = pi (r)^2
so with 222r

circle changes by a factor of 222^2
You might be interested in
Solve the equation for a.
Pavel [41]

Answer:

\large\boxed{a=\dfrac{K}{4+9b}}

Step-by-step explanation:

K=4a+9ab\qquad\text{use the distributive property}\ a(b+c)=ab+ac\\\\K=a(4+9b)\qquad\text{divide both sides by}\ (4+9b)\neq0\\\\\dfrac{K}{(4+9b)}=\dfrac{a(4+9b)}{(4+9b)}\\\\\dfrac{K}{4+9b}=a

6 0
3 years ago
Read 2 more answers
How many points of intersection will the two lines below have? How do you know?
svp [43]
1, both functions are linear
3 0
2 years ago
Find the<br>simple interest:<br>Princpd $6000<br>Interest Rate 5%<br>Time: 6 months<br>Start​
sattari [20]

Answer: The interest is: $150.00

The formula we'll use for this is the simple interest formula, or:

Where:

   P is the principal amount, $6000.00.

   r is the interest rate, 5% per year, or in decimal form, 5/100=0.05.

   t is the time involved, 6....month(s) time periods.

   Since your interest rate is "per year" and you gave your time interval in "month(s)" we need to convert your time interval into "year" as well.

       Do this by dividing your time, 6- month(s), by 12, since there's 12 months in 1 year.

   So, t is 0.5....year time periods.

To find the simple interest, we multiply 6000 × 0.05 × 0.5 to get that:

The interest is: $150.00

8 0
3 years ago
The distance between points (5,9) and (-7,-7)
ankoles [38]
You need to find the change in x and y 

change in x = 12 
change in y = 16 

to find the distance you use a^2+ b^2 = c^2
or in this case x^2 + y^2 = d^2

144+256 = 400 

\sqrt{400}

=20 
so distance equals 20


I hope this helps!
4 0
3 years ago
In JKL. solve for x <br><br> 66.73<br> 74.89<br> 15.44<br> 38.16
liq [111]
By right triangle trigonometry, the sine of the measure of an angle is the ratio of the opposite side of this angle to the hypotenuse.

Thus, \displaystyle{\sin27^{\circ}= \frac{34}{x}


\sin27^{\circ} is a constant which can be found using a calculator:

with calc in pc: view → scientific → 27→sin = 0.45399, 

thus x=34/0.45399=74.89


Answer: 74.89
5 0
3 years ago
Other questions:
  • What is the measure in degrees of &lt;ABC?
    11·2 answers
  • What the correct answer fast
    14·1 answer
  • A home is to be built on a 56 foot 9 inch wide lot. The house is 5 feet 5 inches from the side of the lot and is 34 feet 10 inch
    13·1 answer
  • What is the area of a circle if the circumference is 144.4 inches
    8·1 answer
  • Find the measure of the angles? I need help ASAP
    13·1 answer
  • For their homecoming​ parade, the students of​ U-Math have created a colorful​ banner, 57 meters in​ length, that is made of two
    10·1 answer
  • You have decided to cash in all of the coins you have been saving for the summer. In total you have $7.20. You only have dimes a
    14·1 answer
  • a soccer ball and 12 golf balls have a total mass of 1 kilogram. the mass of each golf ball is about 0.046 kilogram what is the
    6·1 answer
  • Bobbi wanted to purchase a shirt that had an original price of $38.99 at the store where she works. she gets an employee discoun
    5·1 answer
  • Find the unknown length x in the right triangle, to the nearest tenth
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!