Answer:
irrational this is because when you divide - 9 / 4 gives you an irrational answer
Answer:
4cotα=tanα
4(1/tanα)=tanα
(4/tanα)=tanα
cross multiply
=> 4=tan²α
√4=√tan²α
±2=tanα
α=arc( tan) |2|
α=63.4° ( in first quadrant)
and
α=180+63.4=243.4 in the third quadrant
since we also found a negative answer( i.e –2) then α also lies in quadrants where it gives a negative value(i.e second and fourth quadrants)
α=180–63.4=116.6° in the second quadrant
α=360–63.4=296.6 in the fourth quadrant
therefore theta( in my case, alpha) lies in all four quadrants and is equal to:
α=63.4°,243.4°,116.6°and 296.6°
2.65x + 2.50 = y
step by step explanation:
2.65 is how much for each mile, and the variable, x, represents the number of miles of the trip. so, we would do 2.65x to find out how much money you have to pay for the amounts of mile.
next, you would have to add the initial fee, which is 2.50. so 2.65x+2.50.
lastly, y represents the total cost of the trip. so, 2.65x + 2.50 = y
Answer:
It is a discrete random variable.
Step-by-step explanation:
Counts often when something happens like in fixed numbers of tries.
Hope I helped!:)
For this case, the average is the sum of the amounts of the three days divided by three.
We know the earn of Friday and Saturdar. We can assign x to the earn of saturday.


We need to multiply by 3 both sides of the equation.

2181 USD + x USD =300 USD
We need to substrat 2181 USD in both sides.
2181 USD - 2181 USD + x USD =300 USD - 2181 USD
x USD =300 USD - 2181 USD
x USD = - 1881 USD
They need a negative earn in order to have an average earn of 100 USD per day.
1073 USD + 1108 USD - 1881 USD = 300 USD
300 USD / 3 = 100 USD
![[tex]2181 USD - 2181 USD+ xUSD =3100 USD - 2181 USD](https://tex.z-dn.net/?f=%5Btex%5D2181%20USD%20-%202181%20USD%2B%20xUSD%20%3D3100%20USD%20-%202181%20USD%20)
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