Zd, ze, and zf are the perpendicular bisectors of △abc. use that information to find the length of each segment. note that the figure is not drawn to scale.

given: zd = 44, za = 85, fc = 79 find: zc and ac

the line segment zc has length
.

the line segment ac has length
.

  ZC = 85

  AC = 158

Step-by-step explanation:

Z is the circumcenter of the triangle, so AZ, CZ, and BZ are all radii of the circle, hence congruent. ZC = 85.

ZF bisects AC, so AC is twice the length of FC, hence 2×79 = 158. AC = 158.

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.