Math Flashcards
What is the sum of the series 5, 10, 15, 20, 25 … 100?
1050
Convert 75° Celsius into Kelvin
348.15 K
What is the angle in the 3rd quadrant?
Between 180° and 270°
If the time is 3:00 PM and it is 7 hours and 22 minutes later, what time is it?
8:22 PM
What is the value of the ace in a deck of cards?
1 or 11 (depending on the game)
How many red cards are in a standard deck of cards?
26
What is the square root of 289?
17
What is the result of 3^5 divided by 3^9?
3^(-4) or 1/81
Fill in the blank: The formula for simple interest is _______.
Principal x Rate x Time
Calculate the simple interest on $35,000 at a rate of 4% over 10 years.
$14,000
What is 26/52 simplified?
1/2
What is the result of the expression 16 + 34 + 50/2 - 25?
16
What does a graph of direct acceleration and time represent?
Linear relationship
16
34
$ Graph direct of acceleration and time =
$_Graph with linear =
- Eccentricity of Hyperbola = C/A (always < 1) =1
Find the sum of the 6 terms
- 10
21k velocity of 5.3 = 39
000 or 3
Age: (16
12)
10log5x^2 -9log5x^2 =6
-16+34 + 50/2 -25
An = Al (n-1)d
n=nth term
A1= 1S term
I
Sn = Al (1-r ^n 1-r)
A (n) = Al xr^n-1
If train A travels at a 50kph in 2hrs, and train B travels at 70kph, how long would train B meet train A
To calculate when Train B will meet Train A, let’s consider their relative speeds and distances traveled.
Step 1: Find the head start of Train A
Train A travels at 50 kph for 2 hours, so the distance it covers is:
Distance of Train A = 50 \times 2 = 100
This means Train B starts 100 km behind Train A
Step 2: Find the relative speed
Since Train B travels at 70 kph and Train A at 50 kph, their relative speed is
Relative Speed = 70 - 50 = 20kph
Step 3: Calculate the time for Train B to catch Train A
The time it takes for Train B to close the 100 km gap is:
Time= Distance Speed}} = 100/20= 5 hrs
Final Answer:
Train B will meet Train A after 5 hours.
