2/5(1/2y+20)- 4/5=9/20( 2y=1) distribute ; 1/5y + 8 - 4/5=9/10y-20
question; What is the next step after using the distributive
property?

ANSWERS ;
A. Use the multiplication property of equality to isolate
the variable term on one side of the equation.
B. Use the multiplication property of equality to isolate
the constant on one side of the equation.
C. Combine the like terms on the right side of the
equation.
Combine the like terms on the left side of the
equation

Find the value of tan theta if sin theta = 12/13 and theta is in quadrant 2

The rate of decay of a radioactive substance depends upon the amount present initially. the mass y (mg) of the radioactive substance cobalt-60 present in a sample at time t (years) is represented by the exponential equation y=50e −0.1315 t . answer the following questions in complete sentences. 1. how does the exponential equation above compare to the equation for simple interest that is compounded continuously? explain the similarities. 2. what is the initial amount of cobalt-60 in the sample? 2. how much cobalt-60 is left after 8.4 years? show your work. 3. what would be the y-intercept of the graph? what does it represent? 4. after how many years will the amount of cobalt-60 left be 6.25 mg? explain what happens to the cobalt-60 after 50 years? 5. discuss some “real-world” examples and uses of cobalt-60

If 1.4% of the mass of a human body is calcium, how many kilograms of calcium are there in a 165-pound man? 1.0 kg ca 5.1 kg ca 1.0 x 102 kg ca 5.1 x 102 kg ca