Bethany has a circle with a diameter of 86 centimeters and a circumference of 270 centimeters. Julie has a circle that is twice the size of Bethany's circle. Both girls take the circumference of their circles and divide it by the diameter. How will Julie's answer compare to Bethany's?

57 732

step-by-step explanation:

i dont really.know

answer: just subtact the units and then add the non negative : happy to

step-by-step explanation:

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.