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german
3 years ago
15

Sara is driving home from college for the weekend. The average speed of her car for the trip is 45 miles per hour. Write a verba

l model and algebraic expression to represent the distance Sara's car travels in h hours. Identify the units for the expression.
Mathematics
1 answer:
Anni [7]3 years ago
5 0
Verbal model
in she will drive 45 times h hours in h hours

algebra she will drive 45h miles in h hours
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The answer is 24 * 10^4

Since we’re asked for a whole number, we count the number of zeros after the first nonzero numbers. In this case, our first non-zero numbers are 2 and 4 (24). The number of zeros after these numbers  are four (4). The number of zeros indicates the power number of 10.

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Answer:

See explanation

Step-by-step explanation:

Jane is given a $100 gift to start and saves $35 a month from her allowance.

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In general, after x months Jane has saved

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This means that it makes sense to represent the relationship between the amount saved and the number of months with one constant rate (in this case the constant rate is 35). It makes sense because the amount of money increases by $35 each month. Since the amount of increase is constant, we get constant rate. Also the initial amount is known ($100), so there is a possibility to write the equation of linear function representing this situation.

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A cube made of an unknown material has a height of 9 cm. The mass of this cube is 3.645 grams. What is the density of this cube?
ehidna [41]

Answer:

density =  \frac{mass}{volume}

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volume = 9×9×9

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density = 3.645/729

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Step-by-step explanation:

the volume is 729 cm³ cause the given height is 9cm and it is a cube. cube has equal sides so their lengths are the same.

volume = length × height × width

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