He needs to find the mean of the the heights. The mean is the average.
Start with 6x + 2y = 15. Then subtract 6x + 2y from both sides. The left side of your equation then becomes 0 and the right side 15 - 6x - 2y.
Answer:
25 mph
Step-by-step explanation:
Answer:
-2, -6, -10, -14, -18, -22, -26, -30, -34, -38, -42, -46, -50, -54, -58, -62, -66, -70
Step-by-step explanation:
The answer is -70.
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One way to look at it would be to solve for y - if what x is multiplied by is the same for both sides, they're parallel. If one is the negative reciprocal (e.g. for 5/6 the reciprocal is 6/5 and the negative reciprocal is therefore -6/5) of another, they're perpendicular and if they're neither they're neither.Solving for y in x+5y=4, we can subtract x from both sides to get 5y=-x+4. Next, we can divide both sides by 5 to get -x/5+4=y. Since -x/5=(-1/5)(x) and -1/5 is not the negative reciprocal of 5/6 as established earlier, they are neither