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tresset_1 [31]
3 years ago
8

A jet plane traveling at a constant speed goes 1200 mi with the​ wind, then turns around and travels for 1000 mi against the win

d. If the speed of the wind is a constant 50​ mph, and the total flight took 4​ hours, find the speed of the plane. Round your answer to the nearest​ tenth, if necessary.
Mathematics
1 answer:
givi [52]3 years ago
4 0

Answer:

Avg speed 550 miles per hour

Step-by-step explanation:

with the wind 1200 miles traveling

1200/(550+50) = 2 hours

Against the wind

1000/(550-50) = 2 hours

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Answer:

-0.0526

Step-by-step explanation:

Let X be the random variable denoting the net gain(in dollars) for a single trial(one bet).

Assuming that each number in the wheel is equally likely, probability of the outcome being a victory is \frac{1}{38} and probability of failure is \frac{37}{38}. For a win, X takes value 35 and for a loss X takes value -1. So the model is,

P(X=35) = \frac{1}{38}

P(X=-1) = \frac{37}{38}

P(X=i) = 0 \;if\; i \neq 38, i\neq -1

The mean for one bet is E(X) = \sum xP(X=x) = 35\times\frac{1}{38} - 1\times\frac{37}{38} = -0.0526

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3 years ago
Write using algebra.<br><br> Jimmy ran m miles in t minutes. What was his speed?
Ilya [14]
Speed = m x t. as the equation
6 0
3 years ago
A medium-sized (4-pound) sugar pumpkin should yield around 1½ cups of mashed pumpkin. So, if a 4-pound pumpkin will yield about
Greeley [361]

Answer: 948

Step-by-step explanation:

From the question, we are informed that 4-pound pumpkin will yield about 1.5 cups of mashed pumpkin (pumpkin puree).

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= 632 × 1.5

= 948 cups of pumpkin puree

4 0
3 years ago
 A school is planning a field trip to a theme park. A ticket to the park costs ​$21. For a group of 50 or​ more, there is a 12​%
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7 0
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