Given the function f(x) integrable over the interval [a, b], show the steps to calculate the integral I= f(x)dx
by Gauss quadratic formula of order 4. Give an illustrative example.

10 cm

step-by-step explanation:

if the polygon is a rectangle, then the perimeter is x+x+y+y. using the values that you gave, the perimeter is 3+3+2+2=10cm.

75 tickets have been sold so far.

step-by-step explanation:

in this question it is clearly mentioned that 45 children's tickets have been sold and this number is 60% of the total tickets sold.

now let's assume the total number of tickets sold be x.

then 60% of x = 45

⇒

⇒ x(.6) = 45

by dividing with .6 on both the sides of the equation

⇒ x = 75

therefore 75 tickets have been sold so far.

use google you idiot omg you're so annoying

step-by-step explanation:

just sum

10 + 10 = 20