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nasty-shy [4]
3 years ago
5

1. On a train, it takes 3 days, 5 hours, and 15 minutes to get to from Denver to Seattle by train. How many hours does it take t

o get from Denver to Seattle by train? Show your work using the correct conversion factors.
2. Bamboo is one of the fastest growing plants. It can grow up to 2.9 feet per day. How fast in inches per hour can bamboo grow? Show your work using the correct conversion factors.

3. The total cost after tax to repair Tarique’s phone is represented by the expression 0.09(75h) + 75h, where h
represents the number of hours it takes to repair Tarique’s phone. What part of the expression represents the
amount of tax Tarique must pay? Explain using 1-2 complete sentences.
Mathematics
1 answer:
jarptica [38.1K]3 years ago
5 0
For 
1. its 
D=Days
H=Hours
M=Minutes
3d+5h+15m
3d=72h+5h
72h+5h=77h
77h+15m=77h.15m 
But i only have this one right now sorry :P

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Find n so that mean of the data set is 140. (120, 145, 130, 80, 95, 100, 340, n)
Varvara68 [4.7K]

Answer:

we know that mean of the data set is

Sum of all terms / total no. of terms

mean = 120+145+130+80+95+100+340+n / 8

140 = 1010+n / 8

140*8 = 1010 + n

1120 = 1010 + n

1120 - 1010 = n

110 = n

therefore the value of n should be 110

hope it's helpful

5 0
3 years ago
Read 2 more answers
Add these polynomials and simplify. Enter your response in standers form (x^4-9+5x^7) + ( 5x -10 +3x^4 - 2x^2)
Natali [406]

Answer:

5x^7 + 4x^4 - 2x^2 + 5x - 19

Step-by-step explanation:

Start by copying 5x -10 +3x^4 - 2x^2 here.  Next, add x^4 to +3x^4, -9 to -10, and 5x^7:

5x - 10 +3x^4 - 2x^2

     -  9  +x^4               + 5x^7

-----------------------------------------

5x - 19 + 4x^4 - 2x^2 + 5x^7

Now rearrange these terms in descending order by powers of x:

5x^7 + 4x^4 - 2x^2 + 5x - 19   (answer)

4 0
3 years ago
Read 2 more answers
Suppose that you need to create a list of n values that have a specific known mean. Some of the n values can be freely selected.
Leno4ka [110]

As the problem indicates, degrees of freedom are the number of values ​​that can be independently selected before it is necessary to choose specific values ​​to arrive at the desired result.

The average, on the other hand, results from the sum of a list of values ​​divided by the amount of values ​​in the summed list.

Assume that the mean sought is x and consider that the list is composed of a single element a, in that case no random number can be selected, since the mean x must correspond to that number.

If the list were composed of two elements a and b, one of the two values ​​could be chosen randomly, and according to the chosen value the second should be the one whose sum with the previous one results in 2x, this given that the formula of the average \sum\limits_{i=1}^n \frac{ x_{i}}{n}.

With three values ​​a, b and c, it is possible to select two freely, since the thirteen must be the one that balances the sum of a+b, that is (a + b) + c = 3x.

Thus, in general, with n values, it is possible to select n-1 values ​​freely whose sum must be balanced by the last value so that the whole sum is nx.

Answer

In a list of \bf{n} values ​​you can assign \bf{n-1} values ​​freely, that is, you have n-1<em>degrees of freedom.</em>

6 0
3 years ago
Solve each multi-step equation. Show your work. A-2+3= -2
Aleksandr [31]

Answer:

-3-2+3=-2

Step-by-step explanation:

A-2+3=-2

-3 -3

A-2=-5

+2 +2

A=-3

So, A-2+3=-2 is now -3-2+3=-2

8 0
3 years ago
What is the rate of change between (2,2) and (17,7)
ziro4ka [17]

Answer:

\frac{1}{3} = m

Step-by-step explanation:

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

\frac{-2 + 7}{-2 + 17} = \frac{5}{15} = \frac{1}{3}

I am joyous to assist you anytime.

6 0
3 years ago
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