11 5/8 - 3 7/8 - 5 1/4 = 2 1/2. 3 7/8 + 5 1/3 + 2 1/2 = 93/8 = 11 5/8. why is the answer reasonable?​

He amount of carbon-14 present in animal bones t years after the animal's death is given by p(t)equals=upper p 0 e superscript negative 0.00012097 tp0e−0.00012097t. how old is an ivory tusk that has lost 26% of its carbon-14?

If the measure of angle 1 is 110 degrees and the measure of angle 3 is (2 x+10 degree), what is the value of x?

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much