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3 years ago

When Justin goes to work, he drives at an average speed of 60 miles per hour. It takes about 1 hour and 30

Mathematics

1 answer:

dexar [7]3 years ago

6 0

Answer:

$13.14

Step-by-step explanation:

60 mi/1 hour = x mi/1.5 hours

x = 90 mi to drive to work

25 mi/1 gallon = 90 mi/y gallons

y = 3.6 gallons to get to work

$3.65/1 gallon = $z/3.6 gallons

z = $13.14

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3 years ago

Simplify (9k6 + 8k4 - 6k2)(4k2 - 5)

Tasya [4]

Answer:

$36k^8-13k^6-64k^4+30k^2$

Step-by-step explanation:

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4 years ago

19. For livesh's Model A rocket, he uses the equation h=-490^2+ 1120t. When is the height of the Model A rocket 640 centimeters?

Nadusha1986 [10]

Answer:

t = 1.143 s

Step-by-step explanation:

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We can plot this equation using a graphing tool

Please, see attached picture

The rocket reaches his maximum height (640 cm) at

t = 1.143 s

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3 years ago

What is 1 to the power of 5

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3 years ago

Read 2 more answers

The price of peaches at Al’s supermarket can be determined by the equation p=0.28n, where P is the price and n is the number of

Alina [70]

Answer:

k = 0.28

Step-by-step explanation:

The price of peaches at Al's supermarket can be determined by the equation P = 0.28n ........... (1)

where P is the price and n is the number of pounds of peaches.

Now, it is clear that the price of peaches is proportional to the number of pounds of peaches.

So, we can write,

P ∝ n

⇒ P = kn ............. (2) where k is the constant which we have to multiply to covert from proportionality to equation form.

Now, comparing equations (1) and (2) we get k = 0.28 which is the value of the constant of proportionality. (Answer)

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3 years ago