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
Vinvika [58]
3 years ago
8

Two locomotives approach each other on parallel tracks. Each has a speed of 87 km/hr with respect to the ground. If they are ini

tially 27 km apart, how long (in minutes) will it be before they reach each other?
Mathematics
1 answer:
sergiy2304 [10]3 years ago
4 0

Answer:

9.3

Step-by-step explanation:

if both travel at same speed they will take equal distance and time to reach the middle and collide.

hence, 27/2 =13.5km

speed=distance/time

time = distance/speed

time= 13.5/87 = 0.15517mm hr

0.15517×60 = 9.31minutes

You might be interested in
Yen had 19 songs on his mp3 player. he downloaded 9 more songs today, and then he decided to split them all equally among 4 play
ella [17]
7 songs in each playlist

3 0
3 years ago
Make X the subject of the formula<br><br><br>will mark brainliest!!​
irga5000 [103]

Answer:

y =  \frac{x + 2}{x - 4}  \\ xy - 4y = x + 2 \\ xy - x = 4y + 2 \\ x(y - 1) = 4y + 2 \\ x =  \frac{4y + 2}{y - 1}  \\  \boxed{x =  \frac{2(2y + 1)}{y - 1} }

hope this helps.

3 0
2 years ago
A total of 26 bills are in a cash box. Some of the bills are one-dollar bills, and the rest are five-dollar bills. The total amo
kobusy [5.1K]

Answer:

Number of 1 $ bill = 20

Number of 5 $ bill = 6

Explanation:

 Let p represent number of one dollar bolls and q represent number of five bills.

A total of 26 bills are in a cash box.

      p + q = 26    ------------------------- Equation 1

The total amount of cash in the box is $50

      p + 5q = 50    ------------------------- Equation 2

Equation 2 - Equation 1,

        p + 5q - p -q = 50 - 26

        4q = 24

          q = 6

Substituting in equation 1.

         p + 6 = 26

         p = 20

Number of 1 $ bill = 20

Number of 5 $ bill = 6

3 0
3 years ago
The sum of a number and two more than twice the number is less than 50. Find the number
prisoha [69]

Answer:


Step-by-step explanation:19 and 31


7 0
2 years ago
In a field, dry fodder for the cattle is heaped in a
ipn [44]

Answer:

volume of fodder=1/3pie R^2h=\frac{1}{3} *\frac{22}{7} * (3.6)^2 *2.1=28.51m^3

l^2=r^2+h^2

l^2=(2.1)^2+(3.6)^2

l^2=4.441+12.96=17.37

l=\sqrt{17.37}=4.17m

minimum area of polythene to cover fodder=pieRl=\frac{22}{7} *3.6*4.17=47.18m^2

the volume of fodder is 28.51m^3 and minimum area of polythene to cover fodder in the  rainy seasonv47.18m^3

3 0
2 years ago
Other questions:
  • in a classroom, 2/12 of the students play baseball, 4/12 Play football, 1/12 are in the chorus and the rest participate in volun
    10·2 answers
  • Solve for x.<br><br> rs/x=1/4
    6·2 answers
  • WORTH EXTRA POINTS! Pythagrem theroem 7th grade math EASY. Will mark brainliest
    8·1 answer
  • Please check the attachment.
    10·1 answer
  • If a correlation coefficient of -0.898 is given for comparing two things, what does this number tell you about the correlation o
    10·1 answer
  • Someone help me with this
    11·2 answers
  • Help please thanks so much
    6·1 answer
  • A rectangle has an area of 20 square centimeters.
    11·1 answer
  • Solve this problem step by step.<br> 2x^3+17x^2+30x
    6·1 answer
  • PLEASE SOLVE AND CHECK. SHOW COMPLETE SOLUTION
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!