First, recall that Gaussian quadrature is based around integrating a function over the interval [-1,1], so transform the function argument accordingly to change the integral over [1,5] to an equivalent one over [-1,1].



So,

Let

. With

, we're looking for coefficients

and nodes

, with

, such that

You can either try solving for each with the help of a calculator, or look up the values of the weights and nodes (they're extensively tabulated, and I'll include a link to one such reference).
Using the quadrature, we then have

1. 12×20÷(4+16)=
240÷20=12
2. (31-3)÷14+3 power of 2
28÷14+9
2+9=11
Answer: x = 17
Step-by-step explanation:
2+x = 2x-15
subtract x on both sides
2 = x -15
add 15 to both sides
17 = x
------------------
17+2 = 2(17)-15
19 = 34 -15
19 = 19
Answer
I think it would be 8 jumps, might not be correct though.
Step-by-step explanation:
1 yard = 3 foot
There is already 3 foot inside of 4 foot so you just keep adding until you hit 8 yards.
Answer:
To subtract or add decimal numbers the decimal points of both numbers should be undr each other
Step-by-step explanation:
20.39
_ 07.60
= 12 . 79