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Irina18 [472]
2 years ago
6

a train started from Howrah to Allahabad and another train started from Allahabad for Howrah at the same time. The two trains re

ached their destinations in 9 hours
Mathematics
1 answer:
Lemur [1.5K]2 years ago
5 0

The speed ratio of the two trains is 4:3, that is, for every 4 hours that one train is delayed, the other is delayed 3.

<h3>How to find the speed ratio of the trains?</h3>

To find the speed ratio of the trains we must do the following operation:

  • V1 = \frac{x}{t} = \frac{l - x }{9}
  • V1 = \frac{x}{l - x} = \frac{t}{9}

  • T = \frac{t}{9}  = \frac{16}{t}

  • V2 = \frac{x}{t} = \frac{x}{12}

  • V1 : V2 = \frac{x}{12}:\frac{x}{16}

Note: This question is incomplete because there is some information missing. Here is the complete information in:

A train started from Howrah for Allahabad another train started from Allahabad for Howrah at the same time. The two trains reached their destinations in 9hours and 16 hours respectively after they meet each other. Find the ratio of speed of the two trains.​

Learn more about ratio of speed in: brainly.com/question/14811932

#SPJ1

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Step-by-step explanation:

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3 years ago
Find the x-intercept of the line whose equation is 8x + 2y =4
Alex787 [66]

Answer:

<h2>x - intercept=  1/2</h2>

Step-by-step explanation:

8x + 2y =4\\Substitute ,y for ;0\\8x+2(0)=4\\8x+0=4\\8x=4\\\frac{8x}{8} =\frac{4}{8} x = 1/2\\(\frac{1}{2} , 0) -x-intercept

METHOD 2

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6 0
3 years ago
Suppose we select a simple random sample of size n=250 from a large population with a proportion p of successes. Let p be the pr
Tom [10]

Answer:

B.0.15

Step-by-step explanation:

To approximate a binomial distribution as a normal distribution, two conditions must be met:

np > 10

nq = n (1−p) > 10

Here, n = 250.  Check each value of p to see if it meets the conditions.

A. p = 0.03

np = 7.5, nq = 242.5

B. p = 0.15

np = 37.5, nq = 212.5

C. p = 0.02

np = 5, nq = 245

D. p = 0.97

np = 242.5, nq = 7.5

E. p = 0.99

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Of the five choices, only B meets both conditions.

6 0
3 years ago
NEED ANSWER ASAP PLEASE!!
erastova [34]

Answer:

DE=5*8=40

Step-by-step explanation:

DE+EF=DF

5x+17x-20=20x-4

22x-20=20x-4

22x-20x=-4+20

2x=16

x=16/2

x=8

DE=5x

DE=5*8=40

6 0
3 years ago
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