50%. students (in percent) who passed the second exam also passed the first exam.
Let's imagine that there are 100 kids in the teacher's class. We know that 40 of them passed BOTH tests, and 80 passed the second test.
Because if they weren't, they wouldn't have passed the first test and consequently wouldn't have passed both, we can be sure that the group of students who passed BOTH tests is only made up of the 80 who passed the second test.
Thus, both tests were passed by 40 of the 80 pupils who passed the second one:
40/80 = 1/2 = 50%.
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Answer:
the last option or D
Step-by-step explanation:
f(x) > 0 over the interval (-∞, -4)
i hope this helps! quizlet is also very helpful lol, have a wonderful rest of your day/night, xx, nm <3 :)
Answer:
3(15+12)
Step-by-step explanation:
3(5+4)
3( 5 x 3 =15 and 4 x 3= 12)
Step-by-step explanation:
we divide both sides by 4 to single out the X
(4X) / 4 = (2/3)/4
simplify
X = 2/12
Answer:
1 conductors
2 insulators
3.Modern turnout jackets and pants are made of fire resistant fabrics (mainly Aramids such as Nomex and Kevlar) or polybenzimidazole (PBI).
