Answer:
a^2-b^2=(a+b)(a-b) where a=4x and b=5. (4x+5)(4x-5)
Step-by-step explanation:
Since both terms are perfect squares,factor using the difference of squares formula
Answer (<u>assuming it can be in slope-intercept form)</u>:
y = -x - 1
Step-by-step explanation:
When knowing the slope of a line and its y-intercept, you can write an equation to represent it in slope-intercept form, or y = mx + b format. Substitute the m and b for real values.
1) First, find the slope of the equation, or m. Pick any two points from the line and substitute their x and y values into the slope formula,
. I chose the points (0, -1) and (-1, 0):

Thus, the slope is -1.
2) Now, find the y-intercept, or b. The y-intercept of a line is the point at which the line crosses the y-axis. By reading the graph, we can see that the line intersects the y-axis at the point (0,-1), therefore that must be the y-intercept.
3) Now, substitute the found values into the y = mx + b formula. Substitute -1 for m and -1 for b:

Answer:
23. 92 points
24. 18.5 years old
Step-by-step explanation:
set up an equation
23. 79=chicago-13
add 13
chicago=79+13=92
24. 15.5=lou-3
loud=15.5+3=18.5
Yes they can just think of numbers with opposite signs
I-5I=I+5I the absoulte value is 5
Answer:
10/3
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Step-by-step explanation:
<u>Step 1: Define</u>
1/3(4 + 18) - 2²
<u>Step 2: Evaluate</u>
- (Parenthesis) Add: 1/3(22) - 2²
- Exponents: 1/3(22) - 4
- Multiply: 22/3 - 4
- Subtract: 10/3