The radius of a circle is 10. using π, which equation expresses the ratio of the circumference of the circle to the circle's diameter?

The ratio of circumference to diameter is independent of the radius.

Defining C=circumference, r=radius, D=diameter =  2r

Circumference = C = 2 π r = π D  

=> 

ratio of circumference / diameter

= C/D = π

Step-by-step explanation:

It is given that radius of a circle is 10.

We need to write an equation which expresses the ratio of the circumference of the circle to the circle's diameter using π.

The circumference of the circle is

where, r is the radius of the circle.

Substitute r=10 in the above formula.

Divide both sides by 20.

Therefore, required equation is .

7 weeks

step-by-step explanation:

convert each fraction to the least common multiple of 20, so 3/4 = 15/20 & 1/10 = 2/20, then divide 15 by 2 and you get a little over 7, so the food will last 7 weeks.

wholesale price is the initial price before markup. retail price comes after the markup.

a price of 8 bucks that's marked up by 100%   is

formula: initial price + (percent markup in fraction/decimal)(initial price)

8+(1)(8)

8+8

16

retail price is $16.