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mash [69]
3 years ago
7

To measure the speed of the jet stream, a weather plane left its base at noon and flew 800 km directly against the stream with a

n air speed of 750 km/h. It then returned directly to its base, arriving at 2:24 pm. What was the speed of the jet stream?
Mathematics
1 answer:
Mama L [17]3 years ago
3 0

Answer:

I’m not sure but I got this question asked before

Step-by-step explanation:

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An online data base charges $25 an hour during the day and $12.50 an hour at night. If a research company paid $250 for 12 hours
Firdavs [7]

Answer

Find out the  which system of equations could be used to determine the number of hours charged at the day rate (d) and at the night rate (n) .

To proof

As given in the question

Let us assume that the number of hours charged at the day rate = d

Let us assume that the number of hours charged at the night rate = n

An online data base charges $25 an hour during the day and $12.50 an hour at night. If a research company paid $250 for 12 hours of use.

Total working hour in a company including day and night be  12 hours .

than the equation become in the form

d + n = 12

also

An online data base charges $25 an hour during the day

$12.50 an hour at night.

If a research company paid $250 for 12 hours of use.

than the equation becomes

25d + 12.50n = 250

than the two equation are

d + n = 12 , 25d + 12.50n = 250

multiply first by 25 and subtracted  from 25d + 12.50n = 250

25d - 25d + 12.50n - 25n = 250 - 300

12.5 n = 50

n = \frac{50}{12.5}

n = 4hours

put this in the d + n = 12

d + 4 =12

d = 12-4

d = 8 hours

Therefore the number of hours charged at the day rate  is 8 hours  and at the night rate is  4hours .

Hence proved



4 0
3 years ago
Find the mean absolute deviation (MAD) of the data set of 0.4, 0.2, 0.4, 0.6
kupik [55]

Answer:

Assuming data is from population, 0.1

Step-by-step explanation:

7 0
2 years ago
The bar graph in the following graphic represents fictional net exports in billions of dollars for five countries. Net exports a
harina [27]

Answer:

$80 billion

Step-by-step explanation:

From the graph, we have the following:

United\ States = -110

Denmark = -30

China = 120

Germany = 40

Spain = 30

Required

Determine the difference in US and Denmark exports

The difference is calculated as thus:

Difference = Denmark - United\ States

This gives:

Difference = -30 - (-110)

Difference = -30 +110

Difference = 80

<em>Hence, the difference is $80 billion</em>

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2 years ago
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5 0
2 years ago
PLEASE HELP! (this isn’t math but I really need this in the next few mins) An assignment my gaming and animations teacher gave m
valina [46]

Answer:

Gaming Functions

Step-by-step explanation:

I think your teacher is implying for you to explain the function and the "works" behind the game. Maybe talk about the game's programming or the way it's overall structured?

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