Which of rhe following properties is always true for a parallelogram?
1 answer:
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The sale on Friday = x = 6
The sale on Saturday = x+2 = 6 + 2 =8
The sale on Sunday = x+4 = 6+4 =10
Step-by-step explanation:
Let x be the sale of Friday
Then
x+2 will be the sale of Saturday
x+4 will be the sale of Sunday
According to the given statement, that the total sales were 24
The sale on Friday = x = 6
The sale on Saturday = x+2 = 6 + 2 =8
The sale on Sunday = x+4 = 6+4 =10
Keywords: Linear equations
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Answer:
see explanation
Step-by-step explanation:
(a)
x² - 2x - 4
using the method of completing the square
add/subtract ( half the coefficient of the x- term )² to x² - 2x
= x² + 2(- 1)x + 1 - 1 - 4
= (x - 1)² - 5
with c = - 1 and d = - 5
(b)
x² - 2x - 4 = 0 ← using result from (a) , that is
(x - 1)² - 5 = 0 ( add 5 to both sides )
(x - 1)² = 5 ( take the square root of both sides )
x - 1 = ± ( add 1 to both sides )
x = 1 ±