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aev [14]
3 years ago
10

Có 30 đề thi trong đó có 10 đề khó và 20 đề trung bình. tìm xác xuất để

Mathematics
1 answer:
Dimas [21]3 years ago
8 0

Answer:

translate in english i can help

Step-by-step explanation:

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If the greatest value the variable m can be is less than 9, which of the following inequalities best shows all the possible valu
Flauer [41]

The inequality which shows all possible values of m is; m < 9.

<h3>Which inequality best shows all possible values of m?</h3>

It follows from the task content that the variable in discuss, m is described as less than 9.

On this note, the most appropriate inequality to represent the set of all possible values of m is; m < 9.

Read more on inequalities;

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Manny observed a Northern Gannet, a deep diving seabird, hovering at a height of 10 meters above the ocean surface. The bird the
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Answer:

9.2 seconds.

Step-by-step explanation:

We have been given an equation that represents dive of a bird as y=x^2-10.3x+10, 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 x=1.085\text{ and }x=9.215.

Upon rounding to nearest tenth, we will get:

x\approx 1.1\text{ and }x=9.2.

At x\approx 1.1 the bird dives in water and goes down the water surface and at x=9.2 the bird comes to the surface, therefore, the bird will be at surface after 9.2 seconds.

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