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bekas [8.4K]
1 year ago
9

While on a trip, you notice that the video screen on the airplane, in addition to showing movies and news, records your altitude

(in kilometers) above the ground. As the plane starts its descent (at time x = 0), you record the following data: Time, x (min.) Altitude, y (km) 0 12 2 10 4 8 6 6 8 4 10 2 If you were to graph this information, the resulting line would represent a linear function. Using this information from the table and the information on your graph, by how much does the altitude of the plane change for each three-minute change in time during the descent.
Mathematics
2 answers:
photoshop1234 [79]1 year ago
5 0

Answer:

C??

Step-by-step explanation:

mixas84 [53]1 year ago
3 0

Answer:

It descends 3 km.

Step-by-step explanation:

The rate of change is the slope. The formula for slope is

m=\frac{y_2-y_1}{x_2-x_1}

Using the first two points, (0, 12) and (2, 10), we have

m = (10-12)/(2-0) = -2/2 = -1

This means the plane descends 1 km per minute.  This means in 3 minutes' time, the plane descends 3 km.

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Mandarinka [93]

Answer:

25%

Step-by-step explanation:

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1 year ago
Jamie was asked to make r the subject of the formula p=10(q-3r)/r Complete his answer
alexgriva [62]

Answer:

r = 10q/(p + 30)

so put p+30 in the blank

Step-by-step explanation:

p=10(q - 3r)/r

p = (10q - 30r)/r

pr = 10q - 30r

pr + 30r = 10q

r(p + 30) = 10q

r = 10q/(p + 30)

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2 years ago
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The annswer is y=log3x
3 0
2 years ago
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There are four activities on the critical path, and they have standard deviations of 1, 2, 4, and 2. what is the probability tha
Anit [1.1K]

Standard deviations of the four activities of the critical path are 1,2,4,2.

Standard deviation of this critical path = Sum of square root of variance of this corresponding critical path

Standard deviation of critical path =\sqrt{1^2+2^2+4^2+2^2}

=\sqrt{1+4+16+4}

=\sqrt{25}

=5

Now we need to find the probability that the project will completed in 38 weeks given that its expected completion time is 40 weeks.

That is, we need to find P(X<38) :

z=\frac{38-40}{5}= \frac{-2}{5}=-0.4

P(X

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Thus the probability that the project will be completed in 38 weeks is 0.34.

8 0
2 years ago
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What is the y-intercept of the function f(x)=4 - 5x? (Hint: use the commutative property)
Tom [10]

Answer:

Therefore the y-intercept of the function is 4.

Step-by-step explanation:

Intercepts:

The line which intersect on x-axis and y-axis are called intercepts.

y-intercept: The line or function which intersect at y-axis. So when the line intersect at y-axis, X coordinate is zero.

So in the given Function Put x = 0 we will get the y-intercept

f(x)= 4-5x

Put x =0

f(0)= 4-5\times 0

f(0)= 4-0=4

Therefore the y-intercept of the function is 4.

7 0
1 year ago
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