Answer:
(-7, -1)
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Equality Properties
- Multiplication Property of Equality
- Division Property of Equality
- Addition Property of Equality
- Subtract Property of Equality
<u>Algebra I</u>
- Solving systems of equations using substitution/elimination
Step-by-step explanation:
<u>Step 1: Define Systems</u>
5x - 9y = -26
-2x + 3y = 11
<u>Step 2: Rewrite Systems</u>
-2x + 3y = 11
- Multiply everything by 3: -6x + 9y = 33
<u>Step 3: Redefine Systems</u>
5x - 9y = -26
-6x + 9y = 33
<u>Step 4: Solve for </u><em><u>x</u></em>
<em>Elimination</em>
- Combine 2 equations: -x = 7
- Divide -1 on both sides: x = -7
<u>Step 5: Solve for </u><em><u>y</u></em>
- Define equation: 5x - 9y = -26
- Substitute in <em>x</em>: 5(-7) - 9y = -26
- Multiply: -35 - 9y = -26
- Add 35 on both sides: -9y = 9
- Divide -9 on both sides: y = -1
Answer:
2x^2 - 5x + 1.
Step-by-step explanation:
3x - 1 ) 6x^3 - 17x^2 + 8x - 1 ( 2x^2 - 5x + 1
6x^3 - 2x^2
- 15x^2 + 8x
- 15x^2 + 5x
3x - 1
3x - 1
I can't understand the question the last three lines are weird
Answer:
<h2>
</h2>
Step-by-step explanation:
x - y² = -1 ⇒ - y² = - x - 1 ⇒ y² = x + 1 {x≥-1}
4x² + 9y² = 72
4x² + 9(x + 1)² = 72
4x² + 9(x² + 2x + 1) = 72
4x² + 9x² + 18x + 9 - 72 = 0
13x² + 18x - 63 = 0 ⇒ a = 13, b = 18, c = -63
1 day = 750 m
1 * 7 = 750 * 7
7 days = 5250 m
Now, since 1 km = 1000 m, this means in order to convert from meters to kilometers you must divide by 1000
5250 / 1000
= 5.25 km
Or, you could do the hard way by going to wolfram alpha / google and typing 5250 m to km.
Hope this helps!
