On what? Looks like you already have the answers.
Answer:
Step-by-step explanation:
X^4 - 10X^2 + 9 =0 This factors. It just looks odd.
(x^2 - 1)(x^2 - 9) = 0
x^2 - 1 = (x + 1)(x - 1) = 0
x = 1 and x = - 1
x^2 - 9 = (x + 3)(x - 3) = 0
x = 3
x = -3
The correct answer is C (third one down).
Answer:
81 girls are in the class
Step-by-step explanation:
in these kinds of questions to find the amount of girls in the class we need to first divide the given number; which in this case is 27, with the starting number; which is 3, and we get 9. Using the 9 we got from the earlier equation we will multiply the 9 by the number of girls in the class, which is also 9 and we get 81 as our answer.
Lets look at the info we have:-
400 personal video players and find that 399 have NO defects.
Solve:-
2000 ÷ 400 = 5
So, about 5 of the video players will be defect.
Hope I helped ya!! xD<span />
Answer:
Are we suppose to answer this or ...
Step-by-step explanation: