First, you add up the total number of students because we would base our percentage one this.
Total number of students = 1+4+5+10+20+10+5
Total number of students = 55
Now, let's count how many of them got a score of more than 70. For this, you would only count the students belonging to 70-under 80, 80-under 90 and 90-under 100.
Students who got more than 70 = 20+ 10 + 5 = 35
Therefore the percentage is equal to:
Percentage = 35/55 * 100 = 63.64%
Answer:The solution is in the attached file
Step-by-step explanation:
The question is impossible to answer. as we do not have the image of the polygon
Answer:
b x 390 =339
Step-by-step explanation:
You know the formula to find the area of a triangle is B*h/2. If the area is

. Multiply 15 by 2...........which gives you 30 divide 30 by 3 which gives you 10.
Answer:
10