1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lukranit [14]
3 years ago
14

Wendy took a trip from Davenport to Omaha a distance of 300mi. she traveled part of the way by bus which arrived at the train st

ation just in time for Wendy to complete her journey by train. the bus averaged 40 mph and the train averaged 60 mph the entire trip took 5.5 hours. How long did Wendy spend on the train?
Mathematics
1 answer:
Alona [7]3 years ago
6 0
Wendy spent four hours on the train.
If the...
Train Speed= 60 mph
Train Time= x
Bus Speed= 40 mph
Bus Time= 5.5-x
Total Time= 5.5 hr
and 
Total Distance= 300 miles
Then we can put all of that into the equation...
60x + 40(5.5-x)= 300
Now, following the order of operations we can free the x from the parenthesis by multiplying 40 by 5.5 and (-x) to get...
60x + (-40x) + 220= 300
Next we can simplify by adding the 60x and (-40x) to get...
20x + 220= 300
After that we need to get the x alone on the left side.  To do this we must use reverse order;  if we subtract 220 from 220 on the left side and then we can subtract 220 from 300 on the left side.  Remember the Golden Rule of Algebra! If you add, subtract, multiply, divide, or raise to a power on one side you must do it on the other!  This gives us...
20x + 220 - 220= 300 - 220
20x= 80
Now all that is left to get x all alone on the left is to look back at the golden rule of algebra and divide 20 from both 20x and 80.  Which gives us...
20x/20 = 80/20
x= 4

And that gives us our answer!  4 hours :D

Hope this helped!
You might be interested in
If f(x)= 3x+1 is reflect across the y-axis; what would the slope & y-intercept be? *
Elden [556K]

Answer: f(x) = -3x + 1

So the slope is -3 and the y-intercept is 1

Step-by-step explanation:

This is because it’s across the y-axis so the y-intercept doesn’t change. Because it’s a reflection the slope just becomes the opposite of what it originally was, so in this case it will be -3

7 0
2 years ago
Can you help me please I need it and this graduate
yanalaym [24]
Here is how to work the problems and write the expressions.

8 0
3 years ago
WILL GIVE BRAINLIEST, SUPERB RATING, AND THANKS!
Vaselesa [24]

A line on this coordinate plane is horizontal when every input (x) has the same output y).

This function always gives the same output with no matter what input you put it in.

8 0
3 years ago
Your boss tells you that she knows the length of the widgets your company makes is normally distributed with a mean of 25 inches
sp2606 [1]

Answer:

Mean of sampling distribution = 25 inches

Standard deviation of sampling distribution = 4 inches

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 25 inches

Standard Deviation, σ = 12 inches

Sample size, n = 9

We are given that the distribution of length of the widgets is a bell shaped distribution that is a normal distribution.

a) Mean of the sampling distribution

The best approximator for the mean of the sampling distribution is the population mean itself.

Thus, we can write:

\bar{x} = \mu = 25\text{ inches}

b) Standard deviation of the sampling distribution

s = \dfrac{\sigma}{\sqrt{n}} = \dfrac{12}{\sqrt{9}} = 4\text{ inches}

8 0
3 years ago
Simplify 26-18b+11(b-3)
xxMikexx [17]

Answer:

<u>-7b-7</u>

Step-by-step explanation:

First you have to distribute 11 throughout the parentheses.

26-18b+11(b-3)\\26-18b+11b-33

Now we can combine like terms. (-18b, 11b, -33, 26)

-18b+ 11b  and -33+26

-7b-7

This is your simplified answer for your expression.

<u>-7b-7</u>

6 0
2 years ago
Read 2 more answers
Other questions:
  • If your starting salary were $50,000 and you received a 4% increase at the end of every year for 15 years, what would be the tot
    8·2 answers
  • For every 5 boys, there are 3 girls. If there are 60 students how many boys are there?
    13·1 answer
  • John made 12 dollars per delivery plus a base pay of 30 dollars. If he made 150 dollars, how
    7·1 answer
  • 20 pts awarded and brainliest marked, plz help ASAP!!!!!!
    7·2 answers
  • I been working on Thai forever Edna I get help
    13·2 answers
  • How do I find the volume of a cylinder with a missing variable ​
    8·1 answer
  • Question is in picture pls ASAP its due by 8 its 6 will give you brainliest :)))))))
    5·1 answer
  • (10x5)-(30+20)x10=
    15·2 answers
  • HURRY!! 22.7-3w=3.5. Solve for w​
    14·2 answers
  • Can someone please answer this for me it's for a homework assignment.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!