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3 years ago

How do you find the radius of a circle knowing the circumference

Mathematics

1 answer:

VladimirAG [237]3 years ago

5 0

C=2 pie r (example circumference=28) 28=2 x 22\7 x r 28=6.29r then divide both sides by 6.29 28\6.29=4.45 r=4.45

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On a map, Mary's house is located at (−3, 1) and the grocery store is located at (5, 7). Mary walks on a straight line from her

FrozenT [24]

The ordered pair that represents the halfway point between Mary's home and the grocery store is (1, 4)

The midpoint (a, b) between two linear points $(x_1, y_1)$ and $(x_2, y_2)$ is calculated as:

$a=\frac{x_1+x_2}{2} \\\\b=\frac{y_1+y_2}{2}$

On a map, Mary's house is located at (−3, 1) and the grocery store is located at (5, 7).

$x_1=-3, y_1=1, x_2=5, y_2=7$

Substitute these values into the mid-point formulae

$a=\frac{-3+5}{2} \\\\a=\frac{2}{2}\\\\a=1$

$b=\frac{1+7}{2} \\\\b=\frac{8}{2}\\\\b=4$

The ordered pair that represents the halfway point between Mary's home and the grocery store is (1, 4)

Learn more on the midpoint of a line here: brainly.com/question/18315903

5 0

2 years ago

How much dose brendan pay for the package of the 8 t shirts

blagie [28]

Lo siento, solo necesito puntos ...

7 0

4 years ago

Read 2 more answers

The publisher of a recently released nonfiction book expects that over the first 20 months after its release, the monthly profit

wolverine [178]

Answer:

(a) $\frac{dP}{dt}=\frac{4800-1600t-240t^2}{(t^2+20)^2}$

(b)P'(5)=-($4.54) Thousand

(c)P'(11)=-($2.10) Thousand

(d)The fifth Month

Step-by-step explanation:

Given the monthly profit model:

$P(t)=\frac{240t-40t^2}{t^2+20}$

(a)We want to derive a model that gives the Marginal Profit, P' of the book.

We differentiate

$P(t)=\frac{240t-40t^2}{t^2+20}$ using quotient rule.

$\frac{dP}{dt}=\frac{(t^2+20)(240-80t)-(240t-40t^2)(2t)}{(t^2+20)^2}$

Simplifying

$\frac{dP}{dt}=\frac{4800-1600t-240t^2}{(t^2+20)^2}$

We have derived a model for the marginal profit.

(b) After 5 months, at t=5

Marginal Profit=P'(5)

$\frac{dP}{dt}=\frac{4800-1600t-240t^2}{(t^2+20)^2}$

$P^{'}(5)=\frac{4800-1600(5)-240(5)^2}{(5^2+20)^2}$

=-($4.54) Thousand of dollars

(c)Marginal Profit 11 Months after book release

$P^{'}(11)=\frac{4800-1600(11)-240(11)^2}{(11^2+20)^2}$

=-($2.10) Thousand of dollars

(d) Since the marginal profit at t=5 is negative, after the 5th Month, the profit starts to experience a steady decrease.

6 0

3 years ago

A student buys

garik1379 [7]

Answer: 10$

Step-by-step explanation:

164 - 4x16 = 100

6 + 4 = 10

100 : 10 = 10

7 0

3 years ago

(tan B /1-cot B) + (cot B/1-tan B)<br>Please help me .Full point.

DaniilM [7]

Answer:

Hope it helps i typed and attached it pic through word :)

Step-by-step explanation:

in the pic !!!

4 0

1 year ago