Use mathematical induction to show that (a) 1 + 4 +7 + +(3n -2) = n (3n - 1)/2 for n is the element of natural numbers, n is greater than or equal to 1.(

Step-by-step explanation:

      TRUE

We replace the first part of the equation with our value for n=k:

we develop both sides of the equation to verify equality:

      TRUE

answer: 19 is   2

step-by-step explanation: i just looked at your answer and wrote it down

r(0,90)(x,y) . t(-5,0)

last option

step-by-step explanation:

∆def to ∆d"e"f"

- rotate 90 counterclockwise degrees

- then translated 5 to the left (x --> x - 5)

answer is the last option