Ia a certain exam 52 candidates offer biology 60 offer history 96 offer maths 21 offer both biology and history 22 offer maths and bio and 16 offer maths and history if 7 candidates offer all 3 subject how many candidates offer one subject only

156 students

Step-by-step explanation:

From the above question:

The formula for the number of students offering only one subject is given as:

n(Biology OR History OR Mathematics) =n(Biology) + n(History) +n(Mathematics) - n(History and Biology) - n(History and Mathematics) - n(Biology and Mathematics) + n(Biology and History and Mathematics)

= (52+60+96)-(21+22+16)+(7)

= 208 - 59 + 7

= 156 students

parallel and congruent

step-by-step explanation:

the movement of translation is linear.   these have the same translation because you are using the same rule for each point of the triangle so you will see the same slope being used to get from a point on the triangle to its image.

same slope!   you should think parallel when you see those 2 word together (well unless it's the same line but it can't be because we are coming from different points here)

congruent! because each point is being moved the same distance.

47.28 or 47.2857143

step-by-step explanation:

you just divide 331 by 7 and you get that answer. ( i think so tho)