It is £21 but I have to be 20 characters long to post this comment but that’s the answer
Answer:
C.
Step-by-step explanation:
Let be the parametric equations and , we need to clear and eliminate it afterwards to obtain a function of the form :
(1)
(2)
By (1) and (2):
Hence, the correct answer is C.
The correct answer is answer A or x=29/2 or x=-15/2.
Answer:
D. 81
Step-by-step explanation:
I think the attached photo supports for your question to be answered
Here is my answer:
Number of days: 30
Mean of the data set = (68 + 70*2 +74*2 +76*4 +78 +80*5 + 82*3 +84*5 + 88 +88*3 + 92*3) /30 = 81
Well, in this case we can take a as the protagonist.
We can, for example, take the a in the first member of the disequation, the 2 in the second one, changing the signs
so
+ 2 > - a
a > - 2
In fact,
"If 2 > - a, then a > -2."