<span>In math notation, we've done this: z = (X - μ) / σ = (940 - 850) / 100 = 0.90
where z is the z-score
X is Vivian's score (940)
µ is the mean (850)
σ is the standard deviation (100)
As you may know, in a normal distribution it's expected that about 68% of all observations will fall within 1 standard deviation of the mean, 95% will fall within 2 standard deviations, and 99% will fall within 3 standard deviations.
940 lie before the first standard deviation, in which 16.5% is above it
since 940 is 0.9 from the mean and 0.1 from the first standard deviation
so above it is 17.5 % = 0.175 or about 0.18 </span>
The number of tickets that Keith has left is;
<em><u>(45 - 6x) tickets. </u></em>
We are told that Keith buys 45 tickets for rides at the amusement park.
Each ride requires 6 tickets to ride. Thus;
1 ride = 6 tickets.
Now, if she has gone on x rides, it means by proportion;
number of tickets used = 6x tickets.
Since she bought 45 tickets, then it means that, number of tickets she has left are;
(45 - 6x) tickets.
Read more at; brainly.com/question/25330376
Answer:
The center of dilation is not on the original segment.
Step-by-step explanation:
The center of dilation is the only invariant point. If the original segment and the dilated segment have no points in common (are parallel), then the center of dilation cannot be on either the original segment or the dilated segment.
Answer: (9, -5)! :)
Explanation:
-3x - 6y = 3
2x + 7y = -17
-6x - 12y = 6
6x + 21y = -51
9y = -45
y = -5
-3x + 30 = 3
-3x = -27
x = 9
(Also, could I please have brainliest?)
5x+61.50=78 and then subtract and get 5x=16.5 divide by 5 and get 3