In order to get an 81 average,
the student has to get 81x5=405
71+96+90+73+?=405
330+?=405
405-330=75
he needs to get an 75
Step-by-step explanation:
I think the fig.. will helps you a lot...
I drew it pictorially but think of it as 5 sandwiches divided by 3 sisters. Therefore it’s 5/3
Answer:B
Step-by-step explanation:
Answer:
s= 4,-4
Step-by-step explanation: