Answer:
A) b= 8 students
B) 1) 19/55 2) 28/55
Step-by-step explanation:
I'm sorry if I'm getting this whole concept wrong cause it felt way too easy to be right so I'm sorry if you get it wrong.
The reason the first question is 8 is because of the fact that you first have to add the students charted on the Venn-diagram and subtract that from 55, getting you to 8 students.
For the second one, the first part would be 19/55 becuase in the Venn-diagram it is shown that only 19 people passed both and so that be the numerator and the denominator would be the total of students, so it would be 55.
Same thing for part two except the fact that you have to add the students who only passed one subject, so combine 17 and 11, getting you to 28, thus getting the answer 28/55.
Answer:
it is the fourth one it is your answer
Answer:
y= -1/2x+5
Step-by-step explanation:
The formula you need to use is (y-y1)=m(x-x1)
x1=the x point provided
y1=the y point provided
m=the slope
Simply plug the numbers into the equation to start.
(y-3)= -1/2(x-4) Now we need to distribute the slope to both terms inside the parenthesis.
-1/2(x)= -1/2x
-1/2(-4)= 2 Now you put them back into the equation.
(y-3)= -1/2x+2
At this point you can get rid to the parenthesis around y-3 because it is basically saying to take it times 1.
y-3= -1/2x+2 Finally to get y alone you would add 3 to both sides.
+3 +3
y= -1/2x+5
4x+7=5x-4
-4x -4x
7=x-4
+4 +4
11=x
Answer:
Step-by-step explanation:
If v = plane velocity and c = air current, then:
v + c = 480
v - c = 400
2v = 880
v = 440
The plane's velocity in still air would be 440 miles per hour.