The chapter 7 test will have 20-30 questions on it. Novanet!
Answer:
Yes, x-10 is an accurate expression. . . .
Hope that helps
Answer:
Andrews residence is higher than Lisa's residence
Step-by-step explanation:
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.
