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r-ruslan [8.4K]
3 years ago
14

A train traveled 450 kilometers (450 km) east from its starting point for 9 hours (9 h). What was the average speed of the train

during its trip?
Mathematics
1 answer:
elixir [45]3 years ago
4 0

Answer:

You need to find the average for your numbers

Step-by-step explanation:

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dimulka [17.4K]

Calculate the mean of each data set below. Can you find any shortcuts that allow you to find the mean without having to do much calculation? Homework help  6, 10, 6, 10 11, 12, 12, 13, 12 0, 5, 4, 8, 0, 7

Answer: To find the mean of the given observations. we just need to first find the sum of the given observations and the divide the calculate sum by the total number of observations.

So here:

Sum of of observations =6+ 10+ 6+10+11+12+12+13+12+0+ 5+ 4+ 8+ 0+7=116

Number of observations = 15

Therefore, the mean =\frac{116}{15}= 7.733

5 0
3 years ago
Smiths bike shop rents bikes for $10
Trava [24]
10+(4x3)= $22 (How much she rent the bike for)
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2 years ago
1/5+1/4+2/5 this is adding fractions with unlike denominators what is the answer
attashe74 [19]
What you would do is change all the fractions to 20ths so they have a common denominator. For 1/5, you multiply 4x5 to get 20 in the denominator. Whatever you multiply on the bottom, you must do at the top. Do that for all fractions and you would get this:
4/20 + 5/20 + 8/20= 17/20 because denominator stays the same, add the values in the numerator.
ANSWER: 17/20
5 0
3 years ago
I need help. ill mark brain to the first to answer.
Margaret [11]

Answer:

a and f

Step-by-step explanation:

1500 is double 750, which is the combined calories of lunch and breakfast, which is only 1 third.

5 0
2 years ago
Read 2 more answers
Which expression is equivalent<br>HELP ME PLEASE
aalyn [17]

Answer:

the 4th option is correct

Step-by-step explanation:

xy^{2/9}   Original expression

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x(\sqrt[9]{y^{2} } )   The 1/9 of an expression is the same thing is the 9th root of the expression.

7 0
3 years ago
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