Ijust started sophomore year , and i thought geometry would be simple but i was wrong . would anyone me with this problem ! you!

y=14 and x=4. I got this because exterior angles (the angle on the top left with the bottom right and bottom left with top right) always have the same angle measure. Then, after that you just have to turn 7y+27 into an expression by doing 7y+27=125 and solve for y. Then, for the other angle you have to do 180-125 o find the angle measure (which is 55) then do the same thing you did with the other one and turn 15x-5 into an equation like 15x-5=55 and solve for x.

  about 5.6 days

step-by-step explanation:

we can fill the given information into the decay equation and solve for the value of t at which half the sample remains.

the half-life is about 5.6 days.