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viktelen [127]
3 years ago
10

An airplane descends at a rate of 500 feet per minute.Write and evaluate an expression to show how far the plane will descend in

6 minutes.
Mathematics
1 answer:
Nataly_w [17]3 years ago
8 0

Answer:

500/6 min if I'm correct

Step-by-step explanation:

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Which of the following statements are true of the graph of the function f(x) = (x+5)(x-3)
Degger [83]

The answer is the graph has a relative maximum

6 0
3 years ago
Two passenger train, A and B, 450 km apart, star to move toward each other at the same time and meet after 2hours.
likoan [24]

Let v be the speed of train A, and let's set the origin in the initial position of train A. The equations of motion are

\begin{cases}s_A(t) = vt\\s_B(t) = -\dfrac{8}{7}vt+450\end{cases}

where s_A,\ s_B are the positions of trains A and B respectively, and t is the time in hours.

The two trains meet if and only if s_A=s_B, and we know that this happens after two hours, i.e. at t=2

\begin{cases}s_A(2) = 2v\\s_B(2) = -\dfrac{16}{7}v+450\end{cases}\implies 2v = -\dfrac{16}{7}v+450

Solving this equation for v we have

2v = -\dfrac{16}{7}v+450 \iff \dfrac{30}{7}v=450 \iff v=\dfrac{450\cdot 7}{30} = 105

So, train A is travelling at 105 km/h. This implies that train B travels at

105\cdot \dfrac{8}{7} = 15\cdot 8=120 \text{ km/h}

5 0
3 years ago
What is the domain of function of f(x)=-2x+4x
dem82 [27]

Answer:

Domain= x∉Real numbers

Step-by-step explanation:

4 0
3 years ago
A pizza chain records how long it takes customers to receive their delivery orders. Suppose the distribution of these delivery t
SCORPION-xisa [38]

Answer:

The probability that the mean delivery time from the sample of 25 orders xˉ is farther than 2 minutes from the population mean cannot be calculated.

Step-by-step explanation:

As given in the question statement, the distribution of delivery times is strongly skewed to the right. The population distribution is skewed to right. Too much skewed distribution can cause the statistical model to work ineffectively and affects its performance. The probability can also not be calculated because the sample size is too small. Small sample size affects the results and makes them less reliable because it results in a higher variability and likelihood of skewing the results.

5 0
3 years ago
You drank 50 L of water on Tuesday but only 30 L of water on Wednesday. What is the percent of change
Slav-nsk [51]

Answer:

40% decrease

50=100

30/50=x/100

30=60% of 50

40% decrease of 50 is 30

Step-by-step explanation:

please mark as brainiest

please give 5 stars

thank you

8 0
3 years ago
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