There are 10 cards. They are numbered: 9,10,11,12,13,14,15,16,17,18. One card is randomly picked. What is P(prime number)? 20%,3
arlik [135]
So there are 10 numbers, and 3 of them are prime. Our prime numbers are 11, 13, and 17.
3/10 would be our fraction for this equation, and 3/10 is equal to 30%.
30% is your answer!
Answer:
W=15
Step-by-step explanation:
:)
This question is worded badly, so don't be alarmed.
Obviously if this were a square patter the number of red tiles could only be 1,4,9,16,25,36 etc and this is not the numbers given...It would help tremendously if they gave you another reference point so as to know how the tiles were being laid out.
If they are laid out alongside one another with a consistent border for each you wouldn't need 12 blue tiles for each red tile either...if two were laid side by side you would only need 20 blue tiles to have the border around both...you see how the arrangement makes a huge difference and you are given no details as to what that arrangement is...
So just to keep it simple, assume that each red tile is surrounded by 12 blue tiles....
Total tiles equals r+12r=13r
t=13r so
t(15)=195, t(20)=260, t(25)=325, t(30)=390
You take the amount of raspberry pieces and divide with the total of taffy pieces
The answer is 0.3
Hope this helps<span />
