Answer:
(3ab)/(2(b-a))
Step-by-step explanation:
The n-th term of an arithmetic progression is ...
an = a1 +d(n -1)
Then the value of n is ...
n = (an -a1)/d +1
The sum of an arithmetic progression is the product of the number of terms and the average of the first and last terms. In this sequence, the common difference d is ...
d = (b -a)
So, the sum is ...
Sn = (a +2a)/2·((2a -a)/(b -a) +1)
Sn = (3ab)/(2(b-a)) . . . . sum of the arithmetic progression
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<u>Example</u>:
The sequence 1, 1.5, 2 has ...
a = 1, b = 1.5
Its sum is given by the above formula as ...
Sn = 3(1)(1.5)/(2(1.5 -1)) = 4.5/(2(.5)) = 4.5 = 1 + 1.5 + 2 . . . . yes
Answer:
I think it’s best to ask your teacher
Step-by-step explanation:
Sorry I needed the points
Answer:
![\large\boxed{(f+g)(x)=x^2+3x-3}](https://tex.z-dn.net/?f=%5Clarge%5Cboxed%7B%28f%2Bg%29%28x%29%3Dx%5E2%2B3x-3%7D)
Step-by-step explanation:
![(f+g)(x)=f(x)+g(x)\\\\f(x)=3x-5,\ g(x)=x^2+2\\\\\text{Substitute:}\\\\(f+g)(x)=(3x-5)+(x^2+2)=3x-5+x^2+2=x^2+3x+(-5+2)=x^2+3x-3](https://tex.z-dn.net/?f=%28f%2Bg%29%28x%29%3Df%28x%29%2Bg%28x%29%5C%5C%5C%5Cf%28x%29%3D3x-5%2C%5C%20g%28x%29%3Dx%5E2%2B2%5C%5C%5C%5C%5Ctext%7BSubstitute%3A%7D%5C%5C%5C%5C%28f%2Bg%29%28x%29%3D%283x-5%29%2B%28x%5E2%2B2%29%3D3x-5%2Bx%5E2%2B2%3Dx%5E2%2B3x%2B%28-5%2B2%29%3Dx%5E2%2B3x-3)
Answer:
Area=57.75 m squared
Step-by-step explanation:
Area= L x W
Area= 11 x 5.25
Area=57.75 or 57 3/4