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
Sphinxa [80]
3 years ago
15

Train a has a speed 15 miles per hour greater than that of train

Mathematics
1 answer:
Sonbull [250]3 years ago
6 0

Train a speed = x+15

Train b speed =x

255/x = 300/(x+15)

255(x+15) = 300x

255x +3825 =300x

3825 = 45x

X = 3825/45 =85

<span>Train B  = 85 miles per hour</span>

<span> Train A = 85+15 = 100 miles per hour</span>


You might be interested in
What is the range of g(x) = - 2x + 3, if the domain is {-2, - 1,0, 1, 2}?
pshichka [43]

Answer:

{ - 1, 1, 7, 23 }

Step-by-step explanation:

To find the range substitute the values from the domain into g(x)

g(-2) = -2(- 2) + 3 = 4 + 3 = 7

g(- 10) = - 2(- 10) + 3 = 20 + 3 = 23

g(1) = - 2(1) + 3 = - 2 + 3 = 1

g(2) = - 2(2) + 3 = - 4 + 3 = - 1

Range is { - 1, 1, 7, 23 }

7 0
2 years ago
Please help this is due today!
miskamm [114]

Answer:

C. )

Step-by-step explanation:

3 0
3 years ago
The following is a linear programming formulation of a labor planning problem. There are four overlapping shifts, and management
dexar [7]

Answer:

d. 15

Step-by-step explanation:

Putting the values in the shift 2 function

X1 + X2 ≥ 15

where x1=  13, and x2=2

13+12≥ 15

15≥ 15

At least 15 workers must be assigned to the shift 2.

The LP model questions require that the constraints are satisfied.

The constraint for the shift 2 is that the  number of workers must be equal or greater than 15

This can be solved using other constraint functions e.g

Putting  X4= 0 in

X1 + X4 ≥ 12

gives

X1 ≥ 12

Now Putting the value X1 ≥ 12  in shift 2 constraint

X1 + X2 ≥ 15

12+ 2≥ 15

14 ≥ 15

this does not satisfy the condition so this is wrong.

Now from

X2 + X3 ≥ 16

Putting X3= 14

X2 + 14 ≥ 16

gives

X2  ≥ 2

Putting these in the shift 2

X1 + X2 ≥ 15

13+2 ≥ 15

15 ≥ 15

Which gives the same result as above.

6 0
3 years ago
miss watson runs a distance of 200m in 25 seconds work out the average speed of miss watson in metres per second
Kobotan [32]

Answer:

8 meters per second

Step-by-step explanation:

l

4 0
2 years ago
10 to 7 power equals
Korolek [52]

Answer: 10,000,000

Step-by-step explanation: when anything rasied to the power you take what ever the Exponaten is and take how everything was there for example 10⁷ 10x10x10x10x10x10x10. And you multiply that.

6 0
3 years ago
Read 2 more answers
Other questions:
  • If point A is located at (0,-8) and B is located at (4,-5) what is the distance between them
    5·1 answer
  • Apply the distributive property to factor out the gcf of 35+14
    11·1 answer
  • The gestation period of humans (266 days) is what percent longer than the gestation period of pigs (115 days).
    10·1 answer
  • Find the equation of the line that passes through (3, 1) and has a y-intercept of –2.
    13·1 answer
  • Are the tables proportional why and why not
    13·1 answer
  • On a coordinate plane, a 5-sided figure has points A prime (negative 4, negative 2), B prime (negative 4, 4), C prime (6, 4), D
    9·2 answers
  • A gym membership costs $25 per month plus a
    12·2 answers
  • One of the legs of a right triangle measures 12 CM and it's hypotenuse Measures 13 CM. find the measure of the other leg. if nec
    13·2 answers
  • Equations<br> 6) 2x + 3y = -1<br> 3x + 4y = -4
    11·1 answer
  • Tomas borrowed money from his grandmother. to pay back the loan, he gives her the same amount of money each month. the linear fu
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!