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3 years ago

6

What is the theoretical probability of Eric picking a black marble next time based on Eric's results what is the experimental pr

obability of Eric picking a black marble next time

1 answer:

o-na [289]3 years ago

5 0

The answer is a! i dont promise

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What is a phrase for 3•n/8

SIZIF [17.4K]

Answer:

3 times n divided by 8

Step-by-step explanation:

Is that what you need if not I will change the answer

6 0

2 years ago

A train averages a speed of 90 miles per hour across the plains and 37.5 miles per hour through the mountains. If a trip of 300

densk [106]

Let p and m represent the numbers of miles in the plains and mountains, respectively.
.. p + m = 300 . . . . . . . the whole trip was 300 miles

time = distance/speed, so the trip time can be written as
.. p/90 + m/37.5 = 3 48/60
.. 5p + 12m = 1710 . . . . . . . . . . multiply by 450 to put in standard form

You can solve these two equations by any of several means. The variable p can be eliminated by subtracting 5 times the first from the second.
.. (5p +12m) -5(p +m) = 1710 -5*300
.. 7m = 210
.. m = 30

30 miles of the trip was through the mountains.

5 0

3 years ago

Read 2 more answers

PLEASE ANSWER QUICK A manufacturing facility pays its employees an average wage of $4.50 an hour with a standard deviation of 50

evablogger [386]

Answer:

B.77.4%

Step-by-step explanation:

Mean wage (μ) = $4.50

Standard deviation (σ) = $0.50

For nay given salary X, the z-score is given by:

$z=\frac{X-\mu}{\sigma}$

For X = $3.75, the z-score is:

$z=\frac{3.75-4.50}{0.50}\\z=-1.5$

For X = $5.00, the z-score is:

$z=\frac{5.00-4.50}{0.50}\\z=1$

A z-score of -1.5 corresponds to the 6.68th percentile, while a score of 1 corresponds to the 84.13th percentile. Therefore, the percentage of workers getting paid between $3.75 and $5.00 an hour is:

$P=84.13-6.68\\P=77.45\%$

The answer is alternative B.77.4%

8 0

3 years ago

Eugene wants to buy jeans at a store that is offering a $10 discount on every item. The tag on the jeans is marked 50% off. The

kifflom [539]

A. $14.99 .. do $49.98/2 = $24.99 and then subtract $10.
B. $19.99 .. do $49.98-19 = $39.98 and then divide it by 2.

3 0

3 years ago

What is 25% of 75? <br><br> Answer now! High value question on the market!<br><br> [ Really! ]

coldgirl [10]

Step-by-step explanation:

$p\%=\dfrac{p}{100}\\\\25\%=\dfrac{25}{100}=0.25\\\\25\%\ of\ 75\to 0.25(75)=18.75$

6 0

3 years ago

Read 2 more answers