Etermine whether the following statements are true and give an explanation or counterexample. a. if f is a constant function on the interval [a, b], then the right and left riemann sums give the exact value of integral from a to b f left parenthesis x right parenthesis dx for any n. is the statement true or false? explain. a. false; only a midpoint riemann sum will give an exact value of the integral. b. true; the area under a constant function is a rectangle, so the rectangles of a riemann sum cover exactly the whole area. c. true; the riemann sum gives an approximation of an integral and never an exact value. d. false; the left and right riemann sums only give an exact value for values of n that are very large.

a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. because no real number satisfies this equation, i is called an imaginary number. has no real solution, since the square of a real number cannot be negative.

5   1/4   miles per hour

step-by-step explanation:

15   3/4 / 3 = 5   1/4

22.83 repeating

step-by-step explanation:

137 ÷ 6 is 22.8333333 therefore we understand that 3 is repeating.

happy to

pls mark as brainliest

hello from mrbilldoesmath!

answer:   (7x + 6y) ( 49x^2 - 42xy + 36y^2)

discussion:

in general, the factorization of a^3 + b^3 is

a^3 + b^ 3 = (a + b) ( a^2 - ab + b^2)

in our case note that 343 = 7^3 and 216 = 6^3 so the equation becomes:

343x^3 + 216y^3 = (7x)^3 + (6y)^3

if you think of a (above) as 7x and b as 6y the factorization becomes

343x^3 + 216y^3 =

((7x + 6y) (   (7x)^2 - 7x*6y + (6y)^2)   =

(7x + 6y) ( 49x^2 - 42xy + 36y^2)

you,

mrb

(a + b) (a^2 - a b + b^2)