1. (15 points) Suppose A is the matrix 0 1 2 2
0 3 8 7
0 0 4 2
(a) Find the general solution to Ax = 0 and describe Nul A.
(b) Describe the column space of this particular matrix A. “All combinations of the
four columns" is not a sufficient answer.
(c) Let R be the reduced row echelon form of A. What is the reduced row echelon form
of B when B is the 6 x 8 partitioned matrix B = using the same A? You
can express the solution in terms of R.

square root of 36/6 = 2.449489743

square root of 16/6 = 1.632993162

square root of 6 = 2.449489743

the answer is square root of 16/6 because the square root of 36/6 is the same answer as square root of 6 = 2.449489743

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet

it would be 3 ÷by 6 because the number on each side

so mark-up is 0.4 multiplied by 180 = 72