4 aces in a deck = 4/52 = 1/13
then <span>without replacement, 3 aces in 51 cards
so
</span>1/13 * 3/51
= 3/663
= 1/221
answer
<span>C.
1/221</span>
Answer:
that would be how to solve it
Answer:
-11 im pretty sure
Step-by-step explanation:
<em>Answer:</em>
<em>20</em>
<em>Step-by-step explanation:</em>
<em>160% ............ 32</em>
<em>100% .................x</em>
<em>x = 100*32/160 = 3200/160 = 20</em>
<em>Good luck !</em>
Let x be the amount he invests at 6%
1280 = 0.06x + 0.07(20000 - x)
1280 = 0.06x + 1400 - 0.07x
1280 - 1400 = -0.01x
-120 / -0.01 = x
x = 12000
Therefore, he invests $12,000 at 6% and $8,000 at 7%
