<h2>
Answer: 8</h2>
Step-by-step explanation:
Therefore, Mel has to work at least 7.5 hours or 8 total hours.
Answer:
<h2>k = 2</h2>
Step-by-step explanation:
ΔOLN and ΔONM are similar. Therefore the sides are in proportion:
We have:
OL = 8
ON = 4
OM = k
Substitute:
<em>cross multiply</em>
<em>divide both sides by 8</em>
If 12 donuts cost $8.50, you can divide $8.50/12 donuts (presumably with a calculator) to get $0.7083/donut which rounds to $0.71/donut. Make sense?
Answer:
The probability of picking two consecutive purple marbles without replacement is 14.72%.
Step-by-step explanation:
Initially, there are 4+6+2+8 = 20 total marbles.
The probability of picking a purble marble is
P_{1} = \frac{number of purple marbles}{number of total marbles}
P_{1}= \frac{8}{20} = 0.4
Since there are no replacements, there are now 19 total marbles, 7 of which are purple. So, the probability of picking another purple marble is
P_{2} = \frac{7}{19} = 0.368
The probability P of picking a purble marble(P_{1}), not replacing it, and then picking another purple marble(P_{2}) is:
P = P_{1}*P_{2} = 0.4*0.368 = 0.1472 = 14.72%