The answer should be
-7(2a-7)
Y1 - y2 / x1 - x2
6 - 0 / 0 - 4
6 / -4 = -1.5
the slope is -1.5 or -3/2
28 / 35 = 0.8
0.8 x 100 = 80
100-80= 20
therefore 20%
Answer:
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
<u>Algebra I</u>
<u>Algebra II</u>
- Distance Formula:
Step-by-step explanation:
<u>Step 1: Define</u>
Point (5, -6)
Point (-3, 12)
<u>Step 2: Find distance </u><em><u>d</u></em>
Simply plug in the 2 coordinates into the distance formula to find distance<em> d</em>
- Substitute in points [Distance Formula]:
- [√Radical] (Parenthesis) Subtract/Add:
- [√Radical] Evaluate Exponents:
- [√Radical] Add:
- [√Radical] Simplify:
9514 1404 393
Answer:
A. (x² -y²)² +(2xy)² = (x² +y²)²
Step-by-step explanation:
As is often the case with problems like this, the correct answer (A) is the only answer that is actually a true equation.
Choices B, C, D are only true if x or y is zero--a violation of the given condition that they are positive integers.