The complete question in the attached figure
let
x-------> <span>the width of the patio
we know that
area of the pool=40*60-----> 2400 ft</span>²
area of the patio=[(40+2x)*(60+2x)]-2400
area of the patio=2400 ft²
so
[(40+2x)*(60+2x)]-2400=2400
2400+80x+120x+4x²-4800=0
4x²+200x-2400=0------> divide by 4 both sides----> x²+50x-600=0
therefore
the answer isx²+50x-600=0
1) Try plugging in the values you have already been given into the equation L=mT+b.
2) After plugging this in, you should get 9982=m(5)+b and 10016=m(34)+b. (Remember, L equals the millimeters in this equation, and T equals the temperature.)
3) Now we use substitution to solve the rest. With the equation 9982=m(5)+b, we can change this to 9982/m(5)=b.
4) Now that we know the value for be, we can insert this into the second equation, in replacement of b: 10016=m(34)+(9982/m(5)) = 34/29. Now we know that the value m equals 34/29.
5) Replace the m values in the first equation with your newfound value: 9982=(34/29)(5)+b = 289308/29.
Answer:
m=35/29
b=289308/29
Answer:
My answer may not be accurate, but try (-4, 2)
I recommend using Khan Academy if you still don't understand the concept. (no shame btw)
Step-by-step explanation:
Here is a thorough explanation.
Interval notation is a way of writing subsets of the real number line . A closed interval is one that includes its endpoints: for example, the set {x | −3≤x≤1} . To write this interval in interval notation, we use closed brackets [ ]: [−3,1]