Answer:
B
Step-by-step explanation:
Think of it like a quarter you got a half and half shot if getting heads or tails. meaning a 50/50 chance.
Answer:
5
Step-by-step explanation:
If rectangle and triangle are attached ....so
area of rectangle will be L×W
and area of triangle will be .5 × b×h
as we know both are attached then base would be equal to width
..so b=W !!!
Answer:
Below.
Step-by-step explanation:
To find the number of students in each grade you multiply the marks by the frequency density. The number of students is given by the area under the rectangles.
So to find the number of students with grade U (< 160) it is:
120 * 0.2 + 40*0.5
= 24 + 20
= 44.
The number for Grade E
= (200 - 160) * 0.5
= 40 * 0.5
= 20.
The others can be found in the same way.
I think it’s B but hopefully i’m right good luck
