Answer:
Step-by-step explanation:
1) Let width = x
One side of the rectangle is covered by river. So only, 3 sides to be covered.
length = 100 - ( x + x) = 100 - 2x
Area of rectangle = length *width
= (100 - 2x)*x
f(x) = 100x - 2x^{2}
![2)f(x) =2x+1\\\\f(1.5)=2*1.5+1=3+1=4\\\\3)g(x)=x^{2}-2x+2\\\\g(1.5)=1.5^{2}-2*1.5+2\\\\=2.25-3+2\\\\=1.25\\\\4)g(x)=\sqrt{x+1}\\\\g(1.5)=\sqrt{1.5+1}=\sqrt{2.5}=0.5\\\\5)r(x)=\dfrac{2x+1}{x-1}\\\\r(1.5)=\dfrac{2*1.5+1}{1.5-1}\\\\=\dfrac{3+1}{0.5}\\\\=\dfrac{4}{0.5}\\\\=\dfrac{4*10}{0.5*10}\\\\=\dfrac{40}{5}\\\\=8](https://tex.z-dn.net/?f=2%29f%28x%29%20%3D2x%2B1%5C%5C%5C%5Cf%281.5%29%3D2%2A1.5%2B1%3D3%2B1%3D4%5C%5C%5C%5C3%29g%28x%29%3Dx%5E%7B2%7D-2x%2B2%5C%5C%5C%5Cg%281.5%29%3D1.5%5E%7B2%7D-2%2A1.5%2B2%5C%5C%5C%5C%3D2.25-3%2B2%5C%5C%5C%5C%3D1.25%5C%5C%5C%5C4%29g%28x%29%3D%5Csqrt%7Bx%2B1%7D%5C%5C%5C%5Cg%281.5%29%3D%5Csqrt%7B1.5%2B1%7D%3D%5Csqrt%7B2.5%7D%3D0.5%5C%5C%5C%5C5%29r%28x%29%3D%5Cdfrac%7B2x%2B1%7D%7Bx-1%7D%5C%5C%5C%5Cr%281.5%29%3D%5Cdfrac%7B2%2A1.5%2B1%7D%7B1.5-1%7D%5C%5C%5C%5C%3D%5Cdfrac%7B3%2B1%7D%7B0.5%7D%5C%5C%5C%5C%3D%5Cdfrac%7B4%7D%7B0.5%7D%5C%5C%5C%5C%3D%5Cdfrac%7B4%2A10%7D%7B0.5%2A10%7D%5C%5C%5C%5C%3D%5Cdfrac%7B40%7D%7B5%7D%5C%5C%5C%5C%3D8)
Answer:
James K. Polk.
i learned this is history 2 years ago.
Answer: 3,19 which is larger than the original
Step-by-step explanation: if you consider that the original average is 3 you can say that all 25 students have 3 siblings so the average is 3, if you add another students with 8 siblings and do some math (25*3+8)/26 its 3,19
Answer:
for the first equation make it y=2x+2
the second y=2x+-6
Step-by-step explanation: