Answer:
1. c = 13
2. a = 20
Step-by-step explanation:
1. 12² + 5² = x²
144 + 25 = x
144 + 25 = 169
√169 = 13
2. 29² - 21² = x²
841 - 441 = x
841 - 441 = 400
√400 = 20
Answer:
x² - 6x + 9 = 0
Step-by-step explanation:
Given
(x - 3)² = 0 ( expand left side using FOIL )
x² - 3x - 3x + 9 = 0 ( collect like terms )
x² - 6x + 9 = 0 ← in general form
Answer:

Step-by-step explanation:
Given
Shape: Rectangle
Division = 4 parts
Required
How much is one part of the division
Represent the rectangle with R and the parts with P
When a rectangle (R) is divided into 4 parts (P); the relationship between R and P is:


<em>This implies that the one part of the division is ¼ of the divided rectangle</em>
Answer:
Step-by-step explanation:
7.86 = 3x - 1.11
3x = 6.75
x = 2.25
Answer:
18
Step-by-step explanation:
Just divide both sides by - 64