Answer:
sin 0
and tan x when x =0
will provide a value of 0

is
real and
rational.
For it to be an integer, whole, or natural number, it would have to be a whole number. Since it can be written as a repeating decimal (.6666666...) it is not irrational either.
65% of 80...turn percent to decimal..." of " means multiply
0.65(80) = 52...so he completed 52 first serves
The answer is 51. Hope this helps
Quotient means divide, meaning we'll divide 6 by -1/2.

When dealing with fraction division, we flip the fraction in the second place and then change the problem to multiplication.

Anything over 1 is just itself, so -2/1 becomes -2.

Finally, we multiply 6 and -2.

So the quotient of 6 and -1/2 is -12.