I put it in a calculator and it said 0 but I might have put it in wrong or misunderstood the equation
Answer:
Q1) (x+7)² = 9
x = -10, -4
Q2) (x-8)² = 144
x = -4, 20
Q3) (x-1)² = 81
x = -8, 10
Step-by-step explanation:
Q1) x² + 14x + 49 = 9
x² + 2(x)(7) + 7² = 9
(x + 7)² = 9
x + 7 = +/- sqrt(9)
x + 7 = 3
x = -4
x + 7 = -3
x = -10
Q2) x² - 16x + 64 = 144
x² - 2(x)(8) + 8² = 144
(x - 8)² = 144
x - 8 = +/- sqrt(144)
x - 8 = 12
x = 20
x - 8 = -12
x = -4
Q3) x² - 2x + 1 = 81
x² - 2(x)(1) + 1² = 81
(x - 1)² = 81
x - 1 =+/- sqrt(81)
x - 1 = 9
x = 10
x - 1 = -9
x = -8
It’s easiest if you break it down in to sections. Times the two sides of the square/ rectangle together to get the area of each section. To find the area of the triangle, you do the same but just divide it by 2. Answer = 80
The fraction of the furniture sold that are tables is given by 1/2y / (1/3x + 1/3y)
<h3>Equation</h3>
Let
- number of chairs = x
- Number of tables = y
Number of tables and chairs sold = 1/2(x + y)
= 1/2x + 1/2y
- Fraction of chairs sold = 1/2x
- Fraction of tables sold = 1/2y
Furniture remaining = 1/3(x + y)
Fraction of tables sold = 1/2y ÷ 1/3(x + y)
= 1/2y ÷ 1/3x + 1/3y
= 1/2y × 1 / (1/3x + 1/3y)
= 1/2y / (1/3x + 1/3y)
Therefore, the fraction of the furniture sold that are tables is given by 1/2y / (1/3x + 1/3y)
Learn more about equation:
brainly.com/question/2972832
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