Percent mark up the amount of percent gain so (12-10)/10 or <u>20%</u>
Answer:
f(x) = (x + 1)² - 9
vertex: (-1, -9)
domain: all real numbers
range: y ≥ -9
Step-by-step explanation:
y = x² + 2x - 8
convert by 'completing the square' method
x² + 2x + 1 = 8 + 1
(x + 1)² = 9
f(x) = (x + 1)² - 9
Answer:
7/12
Step-by-step explanation:
You can pretend the given ratio units are the actual weights. Then the desired ratio is ...
book : mug = 7 : 5
book : (book +mug) = 7 : (7 +5) = 7 : 12
The weight of the book is 7/12 of the total weight.
Answer:
7x4+2x3-4x2-5
Step-by-step explanation:
We will start solving this question by opening the bracket first
So let's solve
(7x4+2x3-3)-(4x2-9x+2)
7x4+2x3-3-4x2+9x-2
Collect like terms
7x4+2x3-4x2-3-2
7x4+2x3-4x2-5
So the final answer is 7x4+2x3-4x2-5
