The radioisotope cobalt-60 is used in cancer therapy. the half-life isotope is 5.27 years. which is equation determines the percent of an initial isotope remaining after t years?

Solve for a. 5 a - 2 = 23 a = ?

Two angles are said to be congruent if: O A. they have the same angle measure. O B. they share a side. O C. the sum of their measures is 180°

A student must answer any three of the four essay questions on a social studies test. How many different selections of questions can be made?

Consider a normal distribution with mean 30 and standard deviation 2. What is the probability that a value selected at random from this distribution is greater than 30

Round 3184.5641 to the nearest hundred

What is 12x+4y=8 in slope intercept form

Find the length of the missing side to the nearest tenth of a unit The legs of the triangles are a and b and the hypotenuse is c a=7cm b=? c=25cm

The base of a triangle in which h=9 and a=135in^2

Cherries cost $2 /lb. Grapes cost $0.50 /lb. You can spend no more than $2 on fruit, and you need at least 2 lb in all. Create a graph showing the amount of each fruit you can buy.

Is 0.16 a whole number, integer, or rational number?