Mariela earned the following test scores in math:
95, 90, 100, 85, 80
Mr. Adams accidentally entered Mariela's next test score as 0. Which of these statements are true? Check all that
apply
Before the error, the mean and the median were both 90.
Before the error, the mean was 90 and the median was 100.
The error added an outlier to the data set.
After the error, the median remained the same.
After the error, the mean was 75 and the median was 87.5.
The mean was impacted by the error more than the median
Only the median was impacted by the error.

15%

step-by-step explanation:

use the table and count the number of guesses that has two correct answers.

the following are two correct answers

10010, 01100, 11000

a total of 3 numbers having 2 correct guesses out of 20 questions.

probability of getting 2 correct guesses = the number of questions getting 2 correct answers / total number of questions.

= 3/20

to convert it into percent multiply by 100, we get

= 3/20 * 100

= 15%

the answer is 15%

you.

no one knows lol

step-by-step explanation:

c

step-by-step explanation:

i think because what else can be a sample of every member

let's cover over the formula of the vertex:

y = a(x – h)^2 + k

in this formula, (h,k) are the vertex, always remember that the positive or negative value of the vertex is based on the sign it has.

for example, if the vertex is -3,-6 then both the x and y value would have the positive sign attached to it and if it were a positive x and y value, then a negative sign would be attached to it.

with that being said, for our problem the x value is a positive one so we are looking for a number with a negative sign next to it, in this case the first and second choice.

however, for the first answer choice it isn't quite part of the formula so we know that the answer choice correctly displays the x value.

to confirm, we can see if the -1 fits correctly with the second answer choice, and as mentioned above a negative number will have a positive sign attached to it. so, for our problem we can see that -1 has been changed to +1, so we can confirm that the second answer choice is correct.

hence, our final answer is y=(x - 1)^2 + 1