The formula C=3.14d can be used to approximate The circumference of a circle given its diameter company a manufactures and sells a certain washer with an outside circumference of 7 cm the company has decided that washer his actual circumference is the interval 6.9

answer: y=4000x+14000

step-by-step explanation:

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.

inch

step-by-step explanation:

yard and mile are too big.

that one look

step-by-step explanation: