Use a calculator to find the given value. round to four decimal places. tan 27

a. 0.8910

b. 1.9626

c. 0.4540

d. 0.5095

If f(x)=x^3 and g(x)=2x+7 when g(x)=-5

Find the number of liters in 12.8 gal of gasoline. round to the nearest hundredths

1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis. 3- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in part b?