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
goldfiish [28.3K]
2 years ago
6

A train goes at a constant speed. If it covers 150 miles in 2 1 2 hours,

Mathematics
1 answer:
Ludmilka [50]2 years ago
5 0

Answer:

x = 1 2/3 hours

Step-by-step explanation:

We can use ratios to solve

150 miles          100 miles

---------------- = ---------------

2.5 hours          x hours

Using cross products

150x = 2.5*100

divide each side by 150

150x/150 = 250/150

x = 1 2/3 hours

You might be interested in
Which pair of numbers is relatively prime?
kondor19780726 [428]

Answer:

B

Step-by-step explanation:

Two numbers are relatively prime when there is no integer greater than one that that is a factor of both of them.

A: 15 and 21 both have a factor of 3.

<u>B</u>: 24 and 49 have no common factors, and therefore, are relatively prime.

C. 35 and 135 both have a factor of 5.

D:  45 and 102 both have a factor of 3.

6 0
3 years ago
Solve -7x^2+x+9=-6x quadratic formula
myrzilka [38]

Answer:

-7x^2+x+9=-6x

-7x^2+x+9+6x=-6x+6x

-7x^2+7x+9=0

quadratic\: formula

x_{1,\:2}=\frac{-7\pm \sqrt{7^2-4\left(-7\right)\cdot \:9}}{2\left(-7\right)}

\sqrt{-7^{2} -4(-7)\times9} =\sqrt{301}

x_{1,\:2}=\frac{-7\pm \sqrt{301}}{2\left(-7\right)}

\frac{-7+\sqrt{301}}{2\left(-7\right)}

=\frac{-7+\sqrt{301}}{-2\cdot \:7}

=\frac{-7+\sqrt{301}}{-14}

\frac{-7-\sqrt{301}}{2\left(-7\right)}

=\frac{-7-\sqrt{301}}{-2\cdot \:7}

=\frac{-7-\sqrt{301}}{-14}

answer=\frac{7+\sqrt{301}}{14}

OAmalOHopeO

7 0
3 years ago
A pack with 6 cans of juice costs 3.48. What it the unit price?
nevsk [136]
3.48/6 = 0.58 per can
3 0
3 years ago
All the radii of a circle have the same length? True or False
Semenov [28]

The answer to your question is true

3 0
2 years ago
Read 2 more answers
2/7 = /56 find the sum simply when need
Ludmilka [50]

Answer:

The answer is 2/7 = 16/56

8 0
3 years ago
Other questions:
  • I need a little help with the second part of b and part c! + can y'all check my explanations please
    15·1 answer
  • Write an equation in slope intercept form that goes through the point (0,-2) and has a slope of 3
    6·2 answers
  • Macy finished a job in 3/4 hours . James finished it in 4/5 of the time Macy took. How Long did James take to finish the job?
    13·2 answers
  • What is equal to 2/3
    11·2 answers
  • A rectangular flower garden has an area of 75 square feet. It is 15 feet long. How wide is the garden? *
    15·1 answer
  • Write your answer as a whole number or a mixed number in simplest form. Include the correct unit in your answer.
    7·2 answers
  • Find the area of the shaded figure in the diagram below. Use 3.14 for π and round your answer to the nearest hundredth.
    5·1 answer
  • Write two expressions that are equivalent to the expression below. (9- c) +(9 -c)+(9- c) +(9- c)
    14·2 answers
  • Evaluate:<br> Two to the fifth power.
    6·2 answers
  • How to solve and answer:1<br> 1/3(9-6x)=-11
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!