Answer:
x = 2 and x = 2
Step-by-step explanation:
Simplify this problem by factoring out the coefficient 2:
y=2x^2-8x+8 => 2(x^2 - 4x + 4)
Note that x^2 - 4x + 4 is a perfect square: (x - 2)^2.
y=2x^2-8x+8 = 2(x - 2)^2
Setting this last result = to 0, we get y = 2(x - 2)^2 = 0, which has a repeated solution: x = 2 and x = 2.
Answer:
f(x)=12x-5
Step-by-step explanation:
-5 is the y-intercept since f(1)=0
the difference from -5 and 7 (7-(-5) or 7+5) is 12 and 12/1 equals 12
Answer:
Step-by-step explanation:
8n^2-2n+4
Answer:
Rs. 22.5
Step-by-step explanation:
Given that Rate per hour is Rs.1.50, then;
1hour = Rs. 1.50
If time taken to work is 15hrs, then;
15hrs = x
Divide both expressions
1/15 = 1.50/x
Cross multiply
1 * x = 1.50 * 15
x = 22.5
Hence the total earning of the worker is Rs. 22.5