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NeX [460]
2 years ago
15

Solve the equation 5y+10x=30 for y.

Mathematics
1 answer:
9966 [12]2 years ago
3 0

Answer:Y= 6 - 2x

Step-by-step explanation:move all terms that dont contain y to the right side

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A survey among students at a certain university revealed that the number of hours spent studying the week before final exams was
Rainbow [258]

Answer:

P(25

And we can find this probability with this difference:

P(0

And in order to find these probabilities we can use tables for the normal standard distribution, excel or a calculator.  

P(0

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem'

Let X the random variable that represent the hous spent studying the week before final exams of a population, and for this case we know the distribution for X is given by:

X \sim N(25,6)  

Where \mu=25 and \sigma=6

We are interested on this probability

P(25

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:

P(25

And we can find this probability with this difference:

P(0

And in order to find these probabilities we can use tables for the normal standard distribution, excel or a calculator.  

P(0

6 0
2 years ago
Find the value of x. Write your answer in simplest form.
klemol [59]

Answer:

The value of x is 8

Step-by-step explanation:

4 0
3 years ago
A ball is dropped from a treetop 256 feet above the ground. How long does it take to hit the ground? (s = 16t2)
White raven [17]
4 seconds, so whatever the letter is for the answer I have provided, select it
5 0
3 years ago
Read 2 more answers
How do you do this???????????????????
Akimi4 [234]
The volume of water that goes into the hose is the same as the volume of water that comes out the nozzle. This means the velocity is inversely proportional to the area. The area is proportional to the square of the diameter.

Taken together, these facts mean that if the diameter is divided by a factor of 3, the velocity is multiplied by a factor of 3^2 = 9.

Nozzle velocity = 3^2 * entering velocity
.. = 9 * (4 m/s)
Nozzle velocity = 36 m/s . . . . . . . . . corresponding to selection A
7 0
3 years ago
The Larger of two numbers is 27 more than the smaller. When added together , the sum of the larger number and five times the sma
Genrish500 [490]

Answer:

Small no. is 15

Larger no. is 15 + 27 = 42

Step-by-step explanation:

Let the small no. be x

Larger no. will be x + 27

5x + x + 27 = 117

6x + 27 = 117

6x = 117-27

x = 90/6

x = 15

4 0
3 years ago
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