PLEASE HELP ASAP Write the augmented matrix for each system of equations. -2x - 2y + 5z = 1
-5x - 5y + 72 = 4
9x - 2y + 2z = -1
a.
-2
-2
5
1
-2
-5
N ú
--5
4
7
0
4
9
-2
0
0
0
-1
b.
-2
-5
- 2
- 2
5
1
-2
-5
--5
7
4
9
--2
6
2
2
-1
1

Which representation has a constant of variation of -2.5

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.

Select the correct answer from each drop-down menu. consider the following polynomials equations. 3x^2(x-1) and -3x^3+ 4x^2-2x+1 perform each operation and determine if the result is a polynomial. is the result of a + b a polynomial? yes or no is the result of a - b a polynomial? yes or no is the result of a · b a polynomial? yes or no