If δabc and δxyz are congruent, which of the following statements below is not true?
a
angle b and angle y are congruent.

b
angle cba and angle zxy are congruent.

c
ab and xy are congruent.

d
ac and xz are congruent.

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

Select the correct answer and solve for y

Without any equipment, you can see stars that are 2{,}800{,}0002,800,0002, comma, 800, comma, 000 light-years away. by looking through a small telescope, you can see stars that are 3{,}112{,}000{,}0003,112,000,0003, comma, 112, comma, 000, comma, 000 light-years away. approximately how many times as far can you see using a small telescope as without any equipment?