Answer:
I would go with the first one.
Step-by-step explanation:
The first one is the only one that increases by the same number. In other words, its slope is constant. A linear function has a constant slope. You can tell that it increases by 1/2 every time.
The x coordinate of the vertex will be the average of the two zeros, here -3 and 5, so x=(-3+5)/2 = 1, f(1)=(1+3)(1-5) = -16.
Answer: (1, -16)
Let's do it some other ways. How about completing the square to turn f in to vertex form?
f(x) = (x+3)(x-5) = x² - 2x - 15 = (x² - 2x + 1) - 1 - 15 = (x-1)² - 16
and now we can read off (1, -16) as the vertex.
The other method is the vertex is x= - b/2a = - (-2)/2(1) = 1.
Three methods, same answer. Good.
It’s should be the second on so b and you should get it corrdct
How far above the ground does the ladder touch the wall
Answer:60
ANSWER:
1 : 14
EXPLANATION:
<em>1) Convert 1 meter to centimeters.</em>
7 cm : 100 cm
<em>2) Now you just simplify both sides (divide 7 by 7 to get 1 and then you have to divide 100 by 7 as well).</em>
Therefore, the ratio is:
1 : 14
