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3 years ago

Stephen can deliver 14 newspapers in 20 minutes. How many HOURS will it take him to deliver 126 papers?

Mathematics

1 answer:

Pepsi [2]3 years ago

5 0

20 minutes is 1/3 of an hour

14 x 3 = 42

He delivers 42 papers per hour

126 / 42 = 3 hours

The answer is c

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lidiya [134]

Answer:

I believe it's (6,10).

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3 years ago

⭐️ help would be appreciated

serg [7]

Hey there :)

f (x) = 5x² - 2x
g (x) = 3x² + x - 4

( f + g )( x ) is f ( x ) + g ( x )

5x² - 2x + 3x² + x - 4
Combine like-terms
5x² + 3x² - 2x + x - 4
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4 years ago

A soccer ball is kicked from the top of a 64 ft building into the air at an initial speed of 48 ft/sec. Its flight as a function

FinnZ [79.3K]

Answer:

t = 4 seconds

Step-by-step explanation:

The height of a soccer ball as a function of time is given by :

$h(t)=-16t^2+48t+64$

We need to find the time when the ball hit the ground i.e. h = 0

Put h = 0 in above equation. So,

$-16t^2+48t+64=0\\\\16(-t^2+3t+4)=0\\\\-t^2+3t+4=0$

It is a quadratic equation such that,

t = -1 s and t = 4 s

Neglecting -1 s, the ball will hit the ground after 4 seconds.

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3 years ago

There are 4 fewer cats than dogs. there are2 cats. how many dogs are there?

bogdanovich [222]

Answer:

There are 6 dogs

2 + 4 = 6

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Hope this helps!

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4 years ago

Daniela, the pharmacy technician returned to the stock bottle of 250 milliliter of lithium suspension to the shelf. She used 175

Ierofanga [76]

She returned the bottle of 250 milliliter in lithium stock where another 175 milliliter of lithium was already present in the stock.

Quantity of lithium before return = 175 milliliter.

Quantity of lithium that she returned = 250 milliliter.

Total stock would be now = 175 + 250 = 425 milliliter.

So, there was 425 milliliter of lithium before she used any of it.

Hence, 425 milliliter is the final answer.

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3 years ago