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3 years ago

Can someone please read that and give me an answer, i’ve been stuck on it for awhile.

Mathematics

1 answer:

olya-2409 [2.1K]3 years ago

4 0

Answer:

after 21 seconds

Step-by-step explanation:

Given

h = - 16t² + 272t + 1344

When the ball strikes the ground then h = 0, that is

- 16t² + 272t + 1344 = 0 ( divide through by - 16 )

t² - 17t - 84 = 0 ← in standard form

(t - 21)(t + 4) = 0 ← in factored form

Equate each factor to zero and solve for t

t - 21 = 0 ⇒ t = 21

t + 4 = 0 ⇒ t = - 4

However t > 0 thus t = 21

The ball strikes the ground after 21 seconds.

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Step-by-step explanation:

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3 years ago

Kareem wrote the values shown below.

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Answer: Option 'B' is correct.

Step-by-step explanation:

Since we have given that

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It is known as greatest integer function whose value is always less than or equal to 'x'.

So, [3.2]=3

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3 years ago

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Step-by-step explanation:

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2 years ago

the points in a coordinate plane are reflected in the y-axis. in general, every point (x,y) is mapped onto what point

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Answer:

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Step-by-step explanation:

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3 years ago

The double number line shows the amount of time a hen needs to lay 1 egg.

Scorpion4ik [409]

I realize the double number line in this exercise can be as shown in the attached image, in that case, the table, correctly completed is:

Eggs Time (hours)

3 75

4 100

12 300

Method to complete the table.

First, you must see the double number line (attached image), in this we identify a hen needs 25 hours to lay 1 egg, by this reason, to identify the time required for a certain number of eggs, just multiply the number of eggs by 25 (the number of hours shown on the double number line), then:

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To calculate the number of eggs taking into account the time, you must divide the hours by 25:

100 / 25 = 4

In this way, you can check that the answers are 75, 4, and 300 respectively, to complete the table in the correct form.

You can review more exercises and test your new knowledge about the double number line at the following link: brainly.com/question/13553589?referrer=searchResults

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3 years ago