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expeople1 [14]
3 years ago
15

Plz Answer fast, thanks

Mathematics
1 answer:
Rufina [12.5K]3 years ago
7 0
Answer: B
Zoe is not correct
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Joe is trying to soup up his dragster. He knows that the time needed for the car to go from 0 to 100 miles per hour varies inver
inysia [295]
8 seconds

The hardest part of this is setting up the equation -- the calculations are pretty easy.

You're told that the time (needed to go from 0 to 100 MPH) is inversely proportional to the horsepower:  what this means is that as horsepower gets larger, time gets smaller. This makes sense since the more horsepower you have, the less time it will take you to get to 100 MPH

You can think of this as:

200 HP = 10 seconds
250 HP = x seconds

You set the equation up as:

250 HP / 200 HP = 10 sec / x sec

Now, just cross multiply and solve:

250 / 200 = 10 / x
250x = (200 x 10)
250x = 2000
x = 2000 / 250
x = 8

So, as you increase the horsepower from 200 to 250, the time decreases from 10 seconds to 8 seconds.

Hope this helps!

Good luck.
3 0
3 years ago
A casino knows that people play slot machines in hopes of hitting the jackpot but that most of them lose their dollar. Suppose t
liraira [26]

Answer:

A) Gamblers lose a relatively small amount most of the time but there are a few large pay-outs

B) if person play 5 times, the mean of the casino's profit is $0.04

if person play 5 times, the standard deviation of the casino's profit i$268.33

C) If gamblers play this machine 1000 times in a​ day, the mean is $80

If gamblers play this machine 1000 times in a​ day, the standard deviation is   $3794.3

D) Yes

Step-by-step explanation:

From the details given , it is observed that a casino knows that people play the soft machines in hopes of hitting the jackpot but most of them lose their dollars

There is a certain machine that pays out an average of $0.92 with standard deviation of $120

A) The standard deviation is so large because, Gamblers lose a relatively small amount most of the time but there are a few large pay-outs

B) if person play 5 times, the mean of the casino's profit is

E(x) = ( 1 - $0.92) x 5

     = $0.04

if person play 5 times, the standard deviation of the casino's profit is

S(3x) = √120² x 5

      = $268.33

C) If gamblers play this machine 1000 times in a​ day, the mean is

E(x) = ( 1 - $0.92) x 1000

     = $80

If gamblers play this machine 1000 times in a​ day, the standard deviation is

S(x) = √120² x 1000

      = $3794.3

D) The casino is likely to be profitable due to the average pays out winning jackpot in slot machines occur very less in $0.29, so more people play winning jackpot in slot machines in casino, the casino will become more profitable.

8 0
3 years ago
Select the correct answer
Amiraneli [1.4K]

Answer:

c or d

Step-by-step explanation:

8 0
3 years ago
Which of the following high speed trains are traveling at a rate of 150 miles per hour? A: a train that travels 100 miles in 2/3
kondor19780726 [428]

Answer:

A)

Step-by-step explanation:

youjust have to do this:

100 miles-------------------2/3 hour

x-------------------------------3/3 hour or 1 hour

x=100x1/0.6666666667      2/3=0.6666666667

x= 150 miles

8 0
3 years ago
Dakota’s parents will leave Norfolk, VA at 7:30 a.m. on Thursday in their personal vehicle. The average speed the vehicle will t
Nutka1998 [239]
He w many miles are they traveling
8 0
3 years ago
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