PLZ HELP x + y - 6 =0 x - y = 0 what is the solution of the system? (-3,3) (3,-3) (3,3)

(3, 3)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Equality Properties

Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtract Property of Equality

Step-by-step explanation:

Step 1: Define Systems

x + y - 6 = 0

x - y = 0

Step 2: Rewrite Systems

x + y - 6 = 0

Add 6 on both sides:                    x + y = 6

Step 3: Redefine Systems

x + y = 6

x - y = 0

Step 4: Solve for x

Elimination

Combine 2 equations:                     2x = 6Divide 2 on both sides:                    x = 3

Step 5: Solve for y

Define equation:                     x - y = 0Substitute in x:                        3 - y = 0Subtract 3 on both sides:       -y = -3Divide -1 on both sides:          y = 3

option A

Step-by-step explanation:

surface area of a cylinder formula:

2pi*r^2+2*pi*r*h

r=radius(3)

h=height(8)

hence,

2*pi*9+2*pi*3*8

so

18pi+48pi=66pi

surface area=66pi

now volume of cylinder formula:

pi*r^2*h

so

pi*9*8

72pi is the height

hence 66pi m^2 is surface area and 72pi m^3 is volume

Hope this helps!