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The relative speed of the trains is 75+65 → 140 mph, so this is the same as asking how long does it take a train travelling at 140mph to travel 196miles.  This is 196/140 hours or 1.4 hours or 1 hour 24 minutes.

You got your signs confused. You bought $400 US dollars.

$400 / 1.88 =212.77 the cost in pounds.

$400 / 1.95 =205.13 pounds - the cost of purchasing them back.

212.77 - 205.13 = 7.64 pounds - your loss.

There were 200 tickets sold and adult tickets were $7.50 each while children’s tickets were $4.75 each. If the total amount of money counted was $1197.50, how many children’s tickets were sold?

Let adult tickets sold = A

Let children tickets sold=C

A+C =200

7.50A + 4.75C =1197.50, solve for A, C

A = 90

C =110 number of children tickets sold.

I know it doesnt equal to 1, i already calculated it, thank you.

I believe you didnt open the wiki page because according to the formula it IS 1. i know it isnt, and it obviously doesnt make any sense. my question is where did i go wrong?

I want an explenation.

Thank you anyways

25 - 5 = 20 the cost of two booklets.

20 /2 =$10 cost per booklet.

(2 + (2 * i)) * (3 + 3) =

12 + 12 i

More info

oh its algebra 2 ok i thought normal math apollogies

t = ticket booklet

$5 + 2t = $25

subtract $5 from each side of the equal sign

2t = $25-$5

$25 - $5 = $20

2t = $20

divide by 2 on each side

t = $10

Wait no 

$10

Simplify the following:
(2 + 2 i) (3 + 3 i)

Factor 3 out of 3 + 3 i giving 3 (1 + i):
(2 + 2 i)×3 (1 + i)

Factor 2 out of 2 + 2 i giving 2 (1 + i):
2 (1 + i) 3 (1 + i)

2 (1 + i)×3 (1 + i) = 2 (1 + i)^2 3:
2 (1 + i)^2 3

(1 + i)^2 = 1 + i + i - 1 = 2 i:
2×2 i×3

2×2 = 4:
4×3 i

4×3 = 12:
Answer: |12 i

24i

cos(60)+sin(60)*i=1 Not True!!

cos(60)+sin(60)*i=1/2 + (i sqrt(3))/2

cos(50)+sin(50)*i=sin((2 π)/9) + i cos((2 π)/9)

-89

By the ratio test, the series converges.

sum_(n=1)^∞ (n (1/3)^(n - 1))/(1 + (1/3)^n)≈1.9193300521..........etc.

40,000,000,000^50 =1.267650600... x 10^530

Thank you!