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
Arlecino [84]
3 years ago
8

A train leaves Roseville heading east at 6:00 am at 40 miles per hour. Another eastbound train leaves on a parallel track at 7:0

0 am at 50 miles per hour. What times will it be when the two trains are at the same distance away from Roseville?
Mathematics
1 answer:
Molodets [167]3 years ago
6 0

Answer:

At 11:00 am the both trains will be at same distance away from Roseville

Step-by-step explanation:

The first train was 40 miles away from Roseville at 7:00 am

After some time t the both trains will be at the same distance away from Roseville.

We will make equation for that situation

d- distance      v1= 40mph and v2= 50mph -  velocity

d =  v1*t + 40 = v2*t  => v2*t - v1*t = 40 => t (v2-v1) = 40 -> t = 40/ (v2-v1)

t = 40/(50-40) = 40/10= 4h      t = 4h

7:00 am * 4h = 11:00 am

Good luck!!!

You might be interested in
What is 11/12 as a decimal
S_A_V [24]

it would be 0.9167 as a decimal. I hope this helps :)

7 0
3 years ago
Read 2 more answers
Find the greatest four digit square number by division method​
Agata [3.3K]
9999 is largest 4 digit number, and 100^2 is 10000, or 1 greater than the largest 4 digit number. This means that the closest square root of the largest perfect square is most likely 99. So 99^2 (9801)is the largest perfect square of four digits.
7 0
3 years ago
We have a null hypothesis that u=3.75, but we are reluctant to accept this as the population value in case the true value is dif
Gala2k [10]

Answer:

option A

Step-by-step explanation:

To Test

H₀ : μ = 3.75            

H₁ : μ ≠ 3.75                

now,                                        

If μ = 3.95 then it means H₀ is not true.                  

then the probability is rejecting the null hypothesis.        

Hence, the probability is the power of the test against the alternative μ=3.95                      

The correct answer is option A

7 0
3 years ago
BRAINIEST IF ANSWERED CORRECTLY
adoni [48]

An example of something that doesn't have a solution is something like x+2 = x+3

If we subtract x from both sides, then we end up with 2 = 3, which is always false.

No matter what we plug in for x, the original equation will always be false. The right hand side is always 1 larger than the left side. So that's why we don't have any solutions here.

Side note: equations of this form are known as contradictions (or we could say the equation is inconsistent).

=====================================================

An example of something that has one solution is 3x+2 = 2x+7

Solving this equation leads us to...

3x+2 = 2x+7

3x-2x = 7-2

1x = 5

x = 5

To verify the solution, we plug it back into the original equation

3x+2 = 2x+7

3(5)+2 = 2(5)+7

15+2 = 10+7

17 = 17

We get the same thing on both sides, so we get a true statement. This confirms that x = 5 is the solution to 3x+2 = 2x+7.

=====================================================

An example of an equation with infinitely many solutions is 2x+4 = 2(x+2)

Notice how both sides are the same thing. The 2(x+2) distributes out to get 2x+4

Since we have the exact same identical expression on both sides, this ultimately means no matter what we plug in for x, we'll get a true statement. True statements (like the conclusion at the last section) are simply anything with the same number on both sides after simplifying everything.

Side note: equations of this form are known as identities

5 0
3 years ago
Suppose the diameter of a circle is 4 units. What is its circumference?
Alinara [238K]

Answer:

pi4

Step-by-step explanation: Formula is piD, diamter is 4, so pi4 which equals 12.56

8 0
3 years ago
Read 2 more answers
Other questions:
  • 4/5 >-2/3d helpppppppppppppppppppp
    6·1 answer
  • These lines are perpendicular. Is this statement true or false?
    6·1 answer
  • Solve for x in the diagram below.
    8·2 answers
  • The volumes of two similar figures are given. The surface area of the larger figure is given. Find the surface area of the small
    15·1 answer
  • Find two consecutive positive integers wjose product is 42. (First integer= x, second integer=x+1​
    5·1 answer
  • For each menu item at a fast food restaurant, the fat content (in grams) and the
    15·1 answer
  • Find the difference of the polynomials given below and classify it in terms of degree and number of terms.
    12·1 answer
  • Given that f(x) = x2 + 9x + 18 and g(x) = x + 6, find f(x) – g(x) and
    10·1 answer
  • When solving for a variable in an equation, it is important to complete a 'goals' list so you can..."
    15·1 answer
  • A function is given. g(x) = 6 x ; x = 1, x = a. determine the net change between the given values of the variable.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!