Answer:
D.) Air pollution has steadily decreased since 1999, before suddenly increasing.
Step-by-step explanation:
right on edge
16) First solve like a normal equation.
3|x/9| - 1 = 2
3|x/9| = 3
|x/9| = 1
Now just separate into two equations:
x/9 = 1
x/9 = -1
So x = 9, -9
17) Solve like normal:
-4 - 2|b - 10| = -6
-2 |b - 10| = -2
|b - 10| = 1
Now just separate into two equations:
b - 10 = 1
b - 10 = -1
So then b = 11, 9
Answer: iii - symmetric matrix is correct because A is equaling At therefore making this a symmetric matrix.
Step-by-step explanation:
Please give me brainiest!
A confidence interval is an interval of values that contains the true value of a certain parameter (or proportion, in this case), with a fixed confidence. it is so important to start choosing the level of confidence that we want to have.
once done this, we need an estimate for the parameter/proportion of interest, as confidence intervals are built around these estimates.
Succesor or succesive number.. a sucessive number of 'a'=a+1