which pair of lines are perpendicular A . x − y = 7 A . x - y = 7 and y = x + 3 y = x + 3 B . y = − 4 x + 1 B . y = - 4 x + 1 and 8 x + 2 y = − 1 0 8 x + 2 y = - 1 0 C . y = − 8 C . y = - 8 and y = 2 y = 2 D . x = 4 D . x = 4 and y = − 1 y = - 1

Perpendicular lines have opposite-reciprocal slopes, so the slope of the line we want to find is 1/2. Plugging in the point given into the equation y = 1/2x + b and solving for b, we get b = 6. Thus, the equation of the line is y = ½x + 6.

Step-by-step explanation:

blue marble is 15 times out of 50 = 15/50 reduces to 3/10

landing on tails is 24 out of 50 = 24/50 reduces to 12/25

to find the probability of both multiply together:

3/10 x 12/25 = 3 x 12 / 10 x 25 = 36/250

if you multiplied the numerator and denominator by 10 you get 360/2500.

the answer is 360/2500

answer: 2x + 2 − 2 = 10 − 2; subtraction property of equality

step-by-step explanation: