Kristen calculated the mean of 10 quiz scores. later she was told that there was an error in grading one of her quizzes. a quiz score was changed from 79 to 89. how will this grading revision affect the calculated mean of kristens quiz scores.

1.true 2.false? ? i think. .

step-by-step explanation:

correct answer:

b.(19,-2)

answer: first option i.e. 'a' is correct.

step-by-step explanation:

since we have given that

number of minutes to wrap a small gift box = 4 minutes

we need to find the number of gifts to be wrapped in 5 minutes

since there is a direct variation, as the number of minutes will increase with   number of gifts to be wrapped.

so, let the number of gifts to be wrapped in 5 minutes be x.

so, it becomes,

hence, first option 'a'   is correct.

sas (side angle side)

aa(angle angle)

sss(side side side)

sas you have to find two sides with an angle in between

aa you find two angles because it will always add up to 180

sss find all sides

step-by-step explanation: