Help last question on test!

answer:

From what i can make out, its D

answer:

Option A, A and J; C and H

Step-by-step explanation:

Step 1:  Look at the ones that are the same amount away from 0 from both sides

A = -9, C = -5, E = -1, G = 2, H = 5, J = 9

A and J are opposite because both are 9 but one is negative and one is positive

C and H are opposite because both are 5 but one is negative and one is positive

answer:  Option A, A and J; C and H

x = central angle apc = measure of minor arc ac

the two angles x and 30 add to 180, so x+30 = 180 and x = 180-30 = 150. the measure of minor arc ac is 150 degrees.

what we need to do from here is find the circumference and then multiply it by x/360 since there are 360 degrees in a circle. in this case, x = 150, so x/360 = 150/360 = 15/36 = 5/12. the shortest distance along the curve from a to c is 5/12 of the distance around the entire circle (aka circumference)

c = circumference

c = pi*d

c = pi*24

c = 24pi

now multiply this by 5/12 to get

distance along minor arc ac = (5/12)*(circumference)

distance along minor arc ac = (5/12)*(24pi)

distance along minor arc ac = 10pi

the formula you can use is

l = (x/360)*pi*d

with

l = length of minor arc

x = central angle

d = diameter

which essentially is the steps we took though a bit differently.

the answer is 175.4379

step-by-step explanation: