Answer:
11
Step-by-step explanation:
The median is the middle value when all of the numbers are put in order from smallest to largest
6, 7, 10, 11,13,13,15
There are seven numbers so the middle number is 4
(3 on the left and 3 on the right)
The median is 11
Not sure about the others but
b) 8,192
the pattern is multiplying by 8 each time for b
Answer:
Step-by-step explanation:
y = x^2 - x - 2 is a quadratic function. It's easily factorable: y = (x + 1)(x - 2). Setting this result equal to zero yields the x-intercepts: -1 and 2. This matches the x-intercepts shown on the graph.
The axis of symmetry, x = -b/(2a), derived from the coefficients 1, -1 and -2 of this particular function, is x = 1/2. This x = 1/2 is also the x-coordinate of the vertex. To find the y-coordinate of the vertex, we evaluate y = x^2 - x - 2 at x = 1/2, obtaining:
y = (1/2)^2 - (1/2) - 2, or y = 1/4 - 1/2 - 2, or -2 1/4. This does not quite agree with the y value (-2) shown in the diagram, but is close.
12/$3=20/x is the formula. Then cross multiply to get 12x=60, so x=$5.
