Answer:
25%
Step-by-step explanation:
The increase is 4 games and 4x4=16. +4 would be adding 25 percent
41
Expression : 3 x 12 months=36 +5 rabbits her already had =41
The answer would be 36.
Following PEMDAS, you'd solve what's in the parenthesis first. 2^2 = 4 and 3^2 = 9. This leaves you with 10 + (4 + 9) x 2. Add 9 and 4 to get 13, and then the parenthesis are done.
Next, you'd multiple 13 and 2 (since it's the next step in PEMDAS) to get 26.
Finally, you add together 10 and 26 to get the answer, which is 36.
I hope this helps!
For quadratics, these formulas are used mainly for factoring.
Your equation can be written as ...
... 2(x² +2x -3) = 0
You factor this by looking for factors of -3 (c=x1·x2) that add to give +2 (b=-(x1+x2)). These are {-1, +3}, so the factorization is ...
... 2(x -1)(x +3) = 0
The roots are then 1 and -3, which sum to -b = -2.
(You will note that the numbers used in the binomial factors are the opposites of the roots x1 and x2 in the Viete's Formulas. That is how we can look for them to sum to "b", rather than "-b".)
Answer:
A
Step-by-step explanation:
A is biased because those people at the grocery store will most likely like that grocery store, since they went there to shop in the first place.
B, C, and D are not biased because there is no correlation between the grocery store and the survey questions.
