alaf05160
17.01.2020 •
Mathematics
Polynomial ! 50 points! show all work to number 50 part a and b
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Ответ:
2x^2 + 100x +800
1350 ft^2
Step-by-step explanation:
The length of the pool and walkway is x+40
The width of the pool and walkway is x +20+x = 2x+20
Area is length times width
A = (x+40) *(2x+20)
We can FOIL to find the area
first x*2x = 2x^2
outer x*20 =20x
inner 2x*40 = 80x
last = 40*20 = 800
Add these together
2x^2 +20x+80x+800
2x^2+100x+800
b. x=5
2x^2 + 100x +800
2(5)^2 +100(5) +80
2*25 +500+800
50+1300
1350 ft^2
Ответ:
a) 2x² + 100x + 800
b) 1,350 ft²
Step-by-step explanation:
Area = length × width
(20 + 2x)(40 + x)
800 + 80x + 20x + 2x²
2x² + 100x + 800
x = 5
2(5)² + 100(5) + 800
1350
Ответ:
omg make a long story short, it is 4.5.
Step-by-step explanation: