A sporting goods store sells two types of bicycles, in two colors. The table shows its sales over the last year Mountain bike Total Road bike 66 Silver54120 Black 4436 Total 11090 200 Are buying a road bike and buying a silver bike independent events? Yes, because P(road bike)=0.33 and Proad bike | silver)=0.55. B. Yes, because Proad d bike)=0.55 and P (road bike |si|ver)=0.55 No, because P (roadbike) = 0.55 and P( road bike silver) 0.55 D. No, because P( sad bike)=0.55 and Proad bike |silver)=0.6

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

answer: on graphs, the open and closed circles, or vertical asymptotes drawn as dashed lines us identify discontinuities.

as before, graphs and tables allow us to estimate at best.

when working with formulas, getting zero in the denominator indicates a point of discontinuity.

when working with piecewise-defined functions, check for discontinuities at the transition points where one piece ends and the next begins.

step-by-step explanation: