How many phone numbers are possible in the (770) area code if:
For the form ABC-, Ais restricted to numbers 2-9.
B, C, and X can be any digit 0-9. Also, the ABC of the
phone number cannot be 911.

answer: both chords and diameters have two endpoints on a circle. diameters must intersect the center of a circle.

answer: group b.

step-by-step explanation:

step-by-step explanation:

alright so i think for this one it would to draw it out. this may be hard for me to try and draw, but i will do my best on here:

        r

  /       |     \

notice how it forms 2 triangles inside one bigger triangle.

so if we know the angle spr is the same as psr that is saying the measure of angle p is the same as angle s. this means the big triangle psr is either isosceles or equilateral. in both cases, the triangle is perfectly symmetrical when split down the middle, which is in this case rq. because we know it is perfectly symmetrical on both sides, we know that the two triangles inside the bigger one are equal.