Hall County Schools thought the students would be absent for one day due to a winter storm. However it iced under the snow and students were unable to come to school for three days. How much percent error did Hall County Schools make incorrectly? please help

66.66%

Step-by-step explanation:

To find percentage error you would subtracted the expected value by the actual, and then you would dive that by he actual amount. finally to get you're percent you would multiply by 100. Meaning you would do the following:

1-3=-2

-2/3=-.6666

.6666 x 100 = 66.66%

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer

168

step-by-step explanation:

first off, we know that he drove 3.5 hours at a rate of 48 mph.

knowing that, we want to see how many miles he drove all-together.

in this case, we can just multiply 48 by 3.5.

48 * 3.5 = 168