Please help!
A circle has a diameter of 20 inches. What is the approximate circumference of the circle (using π = 3.14)? *

62.8 inches

Step-by-step explanation:

The circumference of a circle can be found using:

c=π *d

We know that the diameter is 20 inches and we are using 3.14 for pi. We can substitute 20 in for d and 3.14 for pi.

c=3.14*20

Multiply 3.14 and 20

c=62.8

Add appropriate units: inches

c=62.8 inches

The circumference of the circle is about 62.8 inches

So the right answer is 62.8 inches.

Look at the attached picture

Hope it will help you

Good luck on your assignment

you can't solve x because it is 2 linear equation and you only have one equation

option c) graph of line going through 1, 4 and 3, 10

step-by-step explanation:

let y equal to margo's coin collection

let x equal to number of years

at the begining x=0, y=1 → point=(x,y)→point=(0,1)

she adds 3 coins per year, then y=1+3x

at x=1, y=1+3(1)=1+3→y=4→point=(x,y)→point=(1,4)

at x=3, y=1+3(3)=1+9→y=10→point=(x,y)→point=(3,10)

the graph of line going through (1, 4) and (3, 10), then the option c is the correct.