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Alika [10]
3 years ago
14

A cross-country skier traveled at a rate of 40 miles per hour on downhills and 20 miles per hour on flat terrain while skiing a

total 54 miles. If he skied for 2 hours, how many miles of downhills did he ski? PLEASE HELP
Mathematics
2 answers:
damaskus [11]3 years ago
7 0
So you know distance=rate(time). You could use the equation 40(x)+20(2-x)=54. After simplifying, you get x=7/10 or 0.7 hrs. Btw, x represents time downhill, while 2-x represents time on flat terrain since the total is 2. If you don't want to read all that, the answer is 0.7 hrs.
Sholpan [36]3 years ago
3 0
Your answer would be 80 miles.
Hoped this helped!
Please put brainless answer, 1 away from getting goal of 5!
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There are 7 women and 9 men if 2 are promoted what is the probability they are both men
Artist 52 [7]

Answer:

3/10

Step-by-step explanation:

Total number of employees = 7 + 9 = 16

Probability of a man being chosen first to be promoted = 9/16

Probability of the second choice is still a man for promotion = 8/15

Why 8/15?

The number of men left who are eligible for promotion after the 1st man was chosen for promotion is 9 - 1 = 8

The total number of people left after the 1st person is chosen for promotion that are eligible for promotion is 16 - 1 = 15

Hence Probability of choosing 2 men for promotion = 9/16 x 8/15 = 3/10

5 0
3 years ago
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aleksklad [387]
The answer is 6.4
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8 0
3 years ago
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PilotLPTM [1.2K]

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3 0
2 years ago
An option to buy a stock is priced at $150. If the stock closes above 30 next Thursday, the option will be worth $1000. If it cl
valentina_108 [34]

Answer:

Step-by-step explanation:

An option to buy a stock is priced at $150. If the stock closes above 30 next Thursday, the option will be worth $1000. If it closes below 20, the option will be worth nothing, and if it closes between 20 and 30, the option will be worth $200. A trader thinks there is a 50% chance that the stock will close in the 20-30 range, a 20% chance that it will close above 30, and a 30% chance that it will fall below 20.

a) Let X represent the price of the option

<h3><u>  x                  P(X=x) </u></h3>

$1000         20/100 = 0.2

$200          50/100 = 0.5

$0              30/100 = 0.3

b) Expected option price

= \sum x.P(X=x)\\\\ = 1000 * 0.2 + 200 * 0.5 + 0 = \$ 300

Therefore expected gain = $300 - $150 = $150

c) The trader should buy the stock. Since there is an positive expected gain($150) in trading that stock option.

7 0
3 years ago
Can u help me please
GalinKa [24]
0.15625
0.15625  \times 64
5 0
3 years ago
Read 2 more answers
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