the play began at 7:30p.m and included two 20 minute intermissions if the play lasts 2 hours and 35 minutes at what time did the
2 answers:
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let the two numbers be x and y
From the first sentence,
xy=24
x+y=10
Then make y in equation 2 the subject of the formular and substitute in equation 1
x+y=10
y=10-x
substituting in equation 2
x(10-x)=24
open the bracket
10x-x^2=24
=-x^2+10x=24
Transfer the constant to the left hand side
=-x^2+10x-24=0
Then factorise completely
Look at the photo above
The volume of the shaded region is 1650 cubic feet.
