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%.
Find out more on Percentage at:
brainly.com/question/24877689
#SPJ4
Hey there!
If you have a granola bar, and you've already eaten half of it and your 4 friends come up to you asking for equal pieces, you'd have to divide 1/2 by 4 to ensure that they each get an equal amount, or 1/8 of the bar.
Hopefully this helps!
Answer:
19d + 11
Step-by-step explanation:
7(d + 2) - 3 (1- 4d)
Expand the brackets.
7d + 14 - 3 + 12d
Add or subtract like terms.
7d + 12d + 14 - 3
19d + 11
Answer:
the 3rd one
Step-by-step explanation:
I had this question on edgunity
To find<span> the perimeter of the </span>quarter circle<span>, </span>find<span> the circumference of the whole </span>circle<span>, divide by 4, and then add the radius twice. To </span>find<span> the radius when you are given the </span>area<span> of the </span>quarter circle<span>, multiply the given </span>area<span> by 4, then plug this number in for A into the formula A = pi * r^2 and then solve for r.</span>
