Step-by-step explanation:
8x-4y-2z
I think the question is incomplete
Ok, so to so to find gradient with two coordinates you can use this formulae.. m=y2-y1 over x2-x1. Example A=(4,3) and Q(8,5) 4 would be x1, 3 would be y1 , 8 would be x2 and 5 would be y2 put them in the formulae and work it out. its pretty easy after you put them in :)
Here are the steps to finding the final price.
1. 250 x 0.7 (this is the percent that Miles is paying)
$175
2. $175 x 1.06 (this is the entire price and sale tax together)
$185.50 is the final price.
Answer:
7. r = -5
8. x = -1
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Equality Properties
Step-by-step explanation:
<u>Step 1: Define</u>
r + 2 - 8r = -3 - 8r
<u>Step 2: Solve for </u><em><u>r</u></em>
- Combine like terms: -7r + 2 = -3 - 8r
- Add 8r to both sides: r + 2 = -3
- Subtract 2 on both sides: r = -5
<u>Step 3: Check</u>
<em>Plug in r into the original equation to verify it's a solution.</em>
- Substitute in <em>r</em>: -5 + 2 - 8(-5) = -3 - 8(-5)
- Multiply: -5 + 2 + 40 = -3 + 40
- Add: -3 + 40 = -3 + 40
- Add: 37 = 37
Here we see that 37 does indeed equal 37.
∴ r = -5 is a solution of the equation.
<u>Step 4: Define equation</u>
-4x = x + 5
<u>Step 5: Solve for </u><em><u>x</u></em>
- Subtract <em>x</em> on both sides: -5x = 5
- Divide -5 on both sides: x = -1
<u>Step 6: Check</u>
<em>Plug in x into the original equation to verify it's a solution.</em>
- Substitute in <em>x</em>: -4(-1) = -1 + 5
- Multiply: 4 = -1 + 5
- Add: 4 = 4
Here we see that 4 does indeed equal 4.
∴ x = -1 is a solution of the equation.
Answer:
x>7
Step-by-step explanation:
-9x + 4 + 12 + 18x >79
9x+16>79
9x>79 - 16
9x > 63
x>7