There are 25 gold cards, none of them are multiples of 10 (because they are odd).
<span>There are 5 silver cards that are multiples of 10 (10, 20, 30, 40, 50) </span>
<span>That's a total of 30 favorable outcomes out of 50 possible cards. </span>
<span>P(gold or multiple of 10) = 30/50 = 3/5 </span>
<span>PART B: </span>
<span>There are 25 silver cards (even) </span>
<span>Of the gold cards (odd), there are 4 multiples of 7 {7, 21, 35, 49} </span>
<span>That's a total of 29 favorable outcomes out of 50 possible cards. </span>
<span>P(silver or multiple of 7) = 29/50</span>
11) 5a-3a= 2
15) 17+(-17)= 0
13) (-9)+3= -6
14) 12(1)= 12
12) (8x)y= 8xy
I believe the answer is 7.18