Answer: 28 points
Step-by-step explanation:
Given : Lexie scores an average of points in a pinball game, and her points in a pinball game are normally distributed.
Let x be the random variable that represents the her points in a pinball game.
, where s is the standard deviation.
Lexie scores 471 points in a game, and this value has a z-score of −2.
i.e.
Hence, the standard deviation= 28 points
Answer:
I think it would be the second one or last one
Answer:
Step-by-step explanation:
x2 + 14x + 1
The final correct answer
(2.2, -1.35) and (2.2, -1.4)
Your welcome!
Also, could I be marked brainliest?
Answer:
B
Step-by-step explanation:
Let's create an equation in point-slope form, which is: , where is the point and m is the slope.
Here, our point is (-2, 7) and our slope is m = -5 so plug these in:
Now, if (a, 2) lies on this line, then it should satisfy the equation. So plug in a for x and 2 for y:
2 - 7 = -5(a + 2)
-5 = -5(a + 2)
Divide by -5:
1 = a + 2
Subtract 2 from both sides:
a = -1
Thus, the answer is B.
Hope this helps!