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
maw [93]
3 years ago
5

Circle 1 has a diameter of 18 and circle 2 has a diameter of 20.

Mathematics
1 answer:
borishaifa [10]3 years ago
5 0

Answer:

D. 59.66

Step-by-step explanation:

The formula is <em>A = \pi r^{2}[/tex\ Also the radius is half of the diameter. and [tex]\pi = 3.14</em>

so we need to find the area's

9 x 9 = 81

81 x 3.14 = 254.34

Next circle.

10 x 10 = 100

100 x 3.14 = 314

Now to find the difference.

314 - 254.34 = 59.66

59.66

Hope this helped! Please mark as brainliest! Thanks!

You might be interested in
Assume that​ women's heights are normally distributed with a mean given by mu equals 62.5 in​,and a standard deviation given by
Misha Larkins [42]

Answer:

(a) 0.5899

(b) 0.9166

Step-by-step explanation:

Let X be the random variable that represents the height of a woman. Then, X is normally distributed with  

\mu = 62.5 in

\sigma = 2.2 in

the normal probability density function is given by  

f(x) = \frac{1}{\sqrt{2\pi}2.2}\exp{-\frac{(x-62.5)^{2}}{2(2.2)^{2}}}, then

(a) P(X < 63) = \int\limits_{-\infty}^{63}f(x) dx = 0.5899

   (in the R statistical programming language) pnorm(63, mean = 62.5, sd = 2.2)

(b) We are seeking P(\bar{X} < 63) where n = 37. \bar{X} is normally distributed with mean 62.5 in and standard deviation 2.2/\sqrt{37}. So, the probability density function is given by

g(x) = \frac{1}{\sqrt{2\pi}\frac{2.2}{\sqrt{37}}}\exp{-\frac{(x-62.5)^{2}}{2(2.2/\sqrt{37})^{2}}}, and

P(\bar{X} < 63) = \int\limits_{-\infty}^{63}g(x)dx = 0.9166

(in the R statistical programming language) pnorm(63, mean = 62.5, sd = 2.2/sqrt(37))

You can use a table from a book to find the probabilities or a programming language like the R statistical programming language.

4 0
3 years ago
What is a scale factor?
Blababa [14]

Answer:

Here is some helpful information from my mini lessons.

Step-by-step explanation:

If two objects have the same shape, they are called "similar." When two figures are similar, the ratios of the lengths of their corresponding sides are equal. To determine if the triangles shown are similar, compare their corresponding sides. Here you'll learn that the ratio of the perimeters of similar figures is equal to their scale factor and that the ratio of their areas is equal to the square of their scale factor. If two polygons are similar, then the ratio of the lengths of any two corresponding sides is called the scale factor. This means that the ratio of all parts of a polygon is the same as the ratio of the sides.

3 0
3 years ago
Graph x &lt;3<br> Please help me
Olenka [21]

Answer:

Step-by-step explanation:

5 0
2 years ago
How many different numbers can be made by multiplying 1 by some,all,or none of the prime numbers below?
bekas [8.4K]
How many different numbers can be made by multiplying 1 by some,all,or none of the prime numbers below?

2,5,5,7,7,7,11

the answer

only 1 answer will remain the same b/c one multiply by a number is just one



brainlest plz
4 0
3 years ago
Why isn’t there a commutative property for subtraction as well as for addition?
erma4kov [3.2K]

Answer:



Step-by-step explanation:


8 0
3 years ago
Other questions:
  • Jamal surveyed students about their favorite lunch choice. He recorded the results in the table below. Favorite Lunch Choice Foo
    13·2 answers
  • Which polynomial is a difference of two squares? <br> x2 − 16 <br> x2 + 16 <br> x2 − 8 <br> x2 + 8
    9·2 answers
  • The sum of the exterior angles of an octagon is 360 degrees. True False
    10·2 answers
  • Factors of 48 that add to equal 26
    6·1 answer
  • A batch of 140 semiconductor chips is inspected by choosing a sample of 5 chips. assume that 10 of the chips do not conform to c
    15·1 answer
  • Add 3 5/12 + 2 5/9 . Simplify the answer and write as a mixed number.
    13·1 answer
  • What is the value of f (6) ?
    10·1 answer
  • Convert the following polar-form vectors of the form ⟨r,θ⟩ into component-form vectors of the form ⟨x,y⟩. Your answers should be
    11·1 answer
  • ASAP HELP! Which equation is NOT linear?
    5·1 answer
  • If 840 CLASS eighth graders, making up 4/5 of total eighth, studied algebra during summer, how many eighth graders are enrolled
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!