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klio [65]
3 years ago
14

An airplane is flying at an altitude of 4000 feet and descends at a rate of 200 per minute. determine whether the altitude is pr

oportional to number of minutes. explain your reasoning
Mathematics
2 answers:
Nat2105 [25]3 years ago
5 0

The <em><u>correct answer</u></em> is:

Yes, it is proportional.

Explanation:

In this relationship, we can write the equation for altitude as y = 4000-200x, where y is the altitude and x is the number of minutes.  For every minute that the plane is in the air, the altitude changes the same number of feet; this means it is a proportional relationship.

melamori03 [73]3 years ago
4 0
It is porportional because it stays the same,  200 feet per minute
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Answer:

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Step-by-step explanation:

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3 years ago
Two students solved the same multi-step equation. Which student is correct? Explain the error. Student A Student B 2x - 4(3x + 6
Gnom [1K]

Answer:

Student B is correct

Student A failed to distribute -4 and -6 when opening the brackets in the first step

Step-by-step explanation:

The solution Student A gave was:

2x - 4(3x + 6) = -6(2x + 1) - 4

2x - 12x + 6 = -12x + 1 - 4

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The solution Student B gave was:

2x - 4(3x + 6) = -6(2x + 1) - 4

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x = 7

Student B is correct.

Explanation of the error:

Student A failed to distribute -4 and -6 when opening the brackets in the first step.

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2x - 4(3x + 6) = -6(2x + 1) - 4

To open this bracket, we will distribute, -4 and -6 so that we get

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Adding the like terms

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Collecting like terms

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8 0
3 years ago
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It may make the problem easier to visualize if we write one of these terms over the other, as follows:

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3 0
3 years ago
How to do this problem??
ahrayia [7]

The answer would be 16 3/4 divided by 3 7/8

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The answer is D <span>8.5x + 4.5y</span>
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