Answer; r=s+q-t —-> S=t-q+r

let's factorise :
now, there are two cases :
case 1 :
case 2 :
Answer:
Grace is the faster swimmer
Step-by-step explanation:
because Grace can do 25 m in .5 min, whereas Melanie can do 65 m in 1 minute, or 32.5 m in .5 min.
equation-
300 ÷ 5 = 60
325 ÷ 5 = 65
Answer: 8327
Step-by-step explanation:
The arithmetic mean of a data is given by :_

Given : For the most recent seven years, the U.S. Department of Education reported the following number of bachelor's degrees awarded in computer science: 4,033; 5,652; 6,407; 7,201; 8,719; 11,154; 15,121.
Then, the annual arithmetic mean number of degrees awarded will be :-

Hence, the annual arithmetic mean number of degrees awarded = 8327