(9x - 8)(9x + 8)
9x × 9x = 81x²
9x × 8 = 72x
-8 × 9x = -72x
-8 × 8 = -64
= 81x² + 72x - 72x - 64
The 72x cancels out, so you're left with 81x² - 64.
The answer is 81x² - 64.
The ratio of rise to run between points B and C is the same as the slope of line AB
<h3>What is an
equation?</h3>
An equation is an expression that shows the relationship between two or more numbers and variables.
Slope of a line = ratio of rise to run = rise / run
Hence:
The ratio of rise to run between points B and C is the same as the slope of line AB
Find out more on equation at: brainly.com/question/2972832
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The answer is 4/3 and I checked two times
1. the gcf is 3
2. add up to 15
3. multiply to 18
Answer:
24.8
Step-by-step explanation:
This is pythagorean theorem since it is a right-angled triangle.
A^2 + B^2 = C^2
Where A and B is the 2 sides that make the right angle
And C is the hypotenuse (the longest side)
So we just substitute in
19^2 + 16^2 = C^2
361 + 256 = C^2
617 = C^2
sqrt(617) = C
24.839 = C
Rounded up to the nearest tenth = 24.8