Answer:
45x
Step-by-step explanation:
9(5x)
9 * 5 = 45
45x
Answer:
I would say too broad.
Step-by-step explanation:
Answer:

Step-by-step explanation:
we have the options

the one that is a perfect equare tinomial is:

because we can rewrite this as follows:
this is because we know that

thus

and the other options cannot be represented as a perfect square trinomial, so the correct answer is:

Answer:
the first 3 is 10 times the value of the second 3
Answer:
9.2 seconds.
Step-by-step explanation:
We have been given an equation that represents dive of a bird as
, where x represents the time the dive lasted in seconds and y represents the height of the bird in meters.
We can see that our given equation is a parabola. The leading coefficient is positive, so our parabola will be an upward opening parabola.
Upon graphing our given equation, we will get our required graph as shown in the attachment.
As x represents the time the dive lasted in seconds and y represents the height of the bird in meters, so the bird will be at the surface when the graph will cross x-axis.
We can see that graph crosses x-axis at
.
Upon rounding to nearest tenth, we will get:
.
At
the bird dives in water and goes down the water surface and at
the bird comes to the surface, therefore, the bird will be at surface after 9.2 seconds.