2 years ago

If the circumference of a circle is 13 pi, what is the radius of the circle?

Mathematics

1 answer:

gavmur [86]2 years ago

7 0

Answer:

r ≈ 2.07

Step-by-step explanation:

Using the formula

C=2πr

Solving for r

r= C/2π = 13/2π ≈ 2.06901

You might be interested in

You have 3/4 of a pie leftover after your party. Each guest takes home 1/6 of the leftover pie. What fraction of the original pi

Mazyrski [523]

What are you looking for how many they took or how many in total is left

7 0

2 years ago

If Free Yer Assets Bank (FYAB) will give you 0.25% compounded quarterly and I.M.A.Q.T.π bank will give you 0.23% interest compou

ivann1987 [24]

Answer:

FYAB gives a better deal.

Step-by-step explanation:

Compound interest:

$A = P(1 + \dfrac{r}{n})^{nt}$

Continuously compounded interest:

$A = Pe^{rt}$

For the quarterly compounded interest, r = 0.25%, and n = 4.

$2P = P(1 + \dfrac{0.0025}{4})^{4t}$

$1.000625^{4t} = 2$

$\log (1.000625^{4t}) = \log 2$

$4t(\log 1.000625) = \log 2$

$t = \dfrac{\log 2}{4\log 1.000625}$

$t = 277$

For the continuously compounded interest, r =0.23%

$A = Pe^{rt}$

$2P = Pe^{0.0023t}$

$2 = e^{0.0023t}$

$\ln 2 = \ln e^{0.0023t}$

$\ln 2 = 0.0023t$

$t = \dfrac {\ln 2}{0.0023}$

$t = 301$

The quarterly compounded doubles in 277 years.

The continuously compounded doubles in 301 years.

Answer: FYAB gives a better deal.

7 0

2 years ago

Hope has of an hour to play outside and do her homework. She wants to split her time equally between the twe activities much tim

fredd [130]

1234567891011121314151617181920

8 0

2 years ago

Read 2 more answers

Beth’s music playlist contains songs she bought and songs her mother bought. The ratio of her songs to her mother’s songs is 3:2

denpristay [2]

Answer:

IDK

nvm its writ 5 in beths colum

sorry for my spelling

Step-by-step explanation:

i got it right on apex

3 0

2 years ago

2. What are the solutions to the quadratic equation

Svetlanka [38]

Answer:

The answer is x=5 and x=−5

x² - 25 = 0

(x-5)(x+5)=0

x²-5x+5x-25=0

x-5=0 x+5=0

x=5 or x=-5

8 0

2 years ago