The discriminant is the value of b²-4ac
rewrite the equation in standard form: 3x²-10x-2=0
b=-10, a=3, c=-2
b²-4ac=(-10)²-4*3*(-2)=100+24=124
124 is the answer.
A scatterplot is used to represent a correlation between two variables. There are two types of correlations: positive and negative. Variables that are positively correlated move in the same direction, while variables that are negatively correlated move in opposite directions.
The <em>correct answers</em> are:
C) a(n) = 0.3+(n-1)0.6
; and
C) a(n) = 47+ (n-1)(-15)
Explanation:
#1) This is an arithmetic sequence, since we are adding the same value to each term to find the next term. We add 0.6 each time, so this is the common difference. The first term is 0.3. This goes in the formula
#2) This is also an arithmetic sequence. This time, we add -15. The first term of this one is 47. This gives us:
Answer:
A
Step-by-step explanation:
Note that for (3, 2) → (5, 3)
The x- coordinate of the image is 2 more (+ 2) than the original and the y- coordinate of the image is 1 more (+ 1) than the original, that is
(x, y ) → (x + 2, y + 1 ) ← rule to obtain image, hence
(2, 4 ) → (2 + 2, 4 + 1 ) → (4, 5 ) → A