It is important that face masks used by firefighters be able to withstand high temperatures because firefighters commonly work in temperatures of 200-500°f. in a test of one type of mask, 12 of 60 masks had lenses pop out at 250°. construct a 90% upper confidence limit for the true proportion of masks of this type whose lenses would pop out at 250°. (round your answers to four decimal places.)

answer: 0

step-by-step explanation: the positive, like 5, + its opposite, like -5 would be 0

5+(-5)=0, or 5-5=0

from the sentence, "tomorrow morning, akiko will arrive an hour late" depicts a third person perspective because it doesn't use any pronoun to replace akiko, the subject of the sentence, and it is in singular form since akiko is only one person.

answer: it is 8

step-by-step explanation:

you know why its 8