Answer:
<h3>120 different ways</h3>
Step-by-step explanation:
Using the combination formula as shown;
nCr = n!/(n-r)!r!
If a stack of 10 different cards are shuffled and spread out face down. If 3 cards are turned face up, the number of different ways 3cards combinations are possible is expressed as;
10C3 = 10!/(10-3)!3!
10C3 = 10!/(7)!3!
10C3 = 10*9*8*7!/7!*3*2
10C3 = 10*9*8/3*2
10C3 = 720/6
10C3 = 120 different ways
Hence there are 120 different card combinations
From the values in the table, we can multiply the speed by the time to find out the amount of miles she travels a day. This is shown below:
30 mph * 2.5 hours = 75 miles
40 mph * 1.875 hours = 75 miles
50 mph * 1.5 hours = 75 miles
60 mph * 1.25 hours = 75 miles
Therefore, she travels 75 miles to work. Given a speed of 24 mph, we divide 75 miles by 24 to find out how long it takes her to travel that far:
75 miles / 24 mph = 3.125 hours
When you are 10 years ,your sister will be 10/2 = 5 years
10 - 5 = 5
Your sister is 5 years younger to you
After 90 years your age will be 100 years.
After 90 years your sister's age will be 5+90 = 95 years
Correct option A
Hope This Helps You!
A central angle is an angle made by 2 radii. Seeing as they want the measure of the angle that represents industry pollution, that would be 40% of the total 360 degrees.
40% = 0.4
0.4 × 360 = 144
The measure is 144 degrees.
