Answer:
157
Step-by-step explanation:
We are given that
Number of students in maths 2A=n(2A)=51
Number of students in math 2B=n(2B)=80
Number of students in math 2C=n(2C)=70
Number of students in maths 2A and 2B=
Number of students in maths 2B and 2C=
Number of students in maths 2A and 2C=
Number of students in maths 2A ,2B and 2C=4
We have to find the number of students in a set.
Formula:
Substitute the values in the given formula

Hence, total number of students in a set=157
Answer:
A parallelogram has two sets of parallel sides. This quadrilateral only has on set of parallel sides, so therefore it cannot be a parallelogram.
Answer:
63 men said no.
Step-by-step explanation
3/5 * 2/2 = 6/10, 6/10 - 3/10 (women) = 3/10 meaning 7/10 men said no. 90*1.7 = 153, 153-90=63
Use a proportion to answer the question
60 = 100%
x = 12
12 x 60 = 720
720 / 100 = 7.2
7.2 is 12% of 60, which is your answer<span />
I’m pretty sure parallelograms are squares, rectangles and rhombuses. So you could take up the needed amount of space with a rectangles and rhombus. Sorry if this isn’t that much help.