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Marysya12 [62]
3 years ago
9

Find the slope of the line that passes through (-7, 6) and (1, -8).

Mathematics
2 answers:
balandron [24]3 years ago
8 0
-1 3/4 is The answer to your question
PSYCHO15rus [73]3 years ago
7 0

Answer:

<h2>-1 3/4</h2>

Step-by-step explanation:

Slope = y2 - y1/x2 - x1

x 1 - -7 = 8  

y -8 - 6 = -14

-14/8 = -1 3/4

I'm always happy to help :)

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Water samples are taken from water used for cooling as it is being discharged from a power plant into a river. It has been deter
blondinia [14]

Answer:

The system of hypothesis for this case are:

Null hypothesis: \mu =150

Alternative hypothesis: \mu >150

A type of error I for this case would be reject the null hypothesis that the true mean is equal than 150 when actually is not true.

Step-by-step explanation:

Previous concepts

A hypothesis is defined as "a speculation or theory based on insufficient evidence that lends itself to further testing and experimentation. With further testing, a hypothesis can usually be proven true or false".  

The null hypothesis is defined as "a hypothesis that says there is no statistical significance between the two variables in the hypothesis. It is the hypothesis that the researcher is trying to disprove".  

The alternative hypothesis is "just the inverse, or opposite, of the null hypothesis. It is the hypothesis that researcher is trying to prove".  

Type I error, also known as a “false positive” is the error of rejecting a null  hypothesis when it is actually true. Can be interpreted as the error of no reject an  alternative hypothesis when the results can be  attributed not to the reality.  

Type II error, also known as a "false negative" is the error of not rejecting a null  hypothesis when the alternative hypothesis is the true. Can be interpreted as the error of failing to accept an alternative hypothesis when we don't have enough statistical power.  

Solution to the problem

The system of hypothesis for this case are:

Null hypothesis: \mu =150

Alternative hypothesis: \mu >150

A type of error I for this case would be reject the null hypothesis that the true mean is equal than 150 when actually is not true.

8 0
4 years ago
Graph the system of inequalities presented here on your own paper, then use your graph to answer the following questions:
Snezhnost [94]

Answer:

Part A:

I have attached the graph of this system of inequalities.

Part B:

Plug in (8,10) into both equations

10 > 3(8) + 10

10 > 24 + 10

10 > 34

This is false!

10 < (-3/4)(8) - 1

10 < (-3)(2) - 1

10 < -6 - 1

10 < -7

This is also false!

So, (8,10) is not included in the solution area for the system.

Step-by-step explanation:

4 0
3 years ago
harry invests £6000 in a savings account. the account pays 3.4% compound interest per year. work out the value of his investment
Pepsi [2]
Because the account PAYS compound interest per year it's called depreciation.
So you do 100-3.4 = 96.6, the divide by 100 = 0.966
Then you do 0.966^3 x £6000 = £5408.6
6 0
3 years ago
Read 2 more answers
One number is 28 less than another number. If the sum of the two numbers is 92, find the two numbers.
kiruha [24]

Answer:

The two numbers are <em>32</em> and <em>60</em>.

Step-by-step explanation:

We can create two simultaneous equations to solve this problem using the information given in the question.

Let number 1 = x

Let number 1 = y

x = y - 28 -> ( 1 )

x + y = 92 -> ( 2 )

We can solve simultaneous equations using substitution or elimination. For this question, we will use substitution as it is the easier option.

Substitute ( 1 ) into ( 2 ):

x + y = 92 -> ( 2 )

( y - 28 ) + y = 92

2y - 28 = 92

2y = 120

y = 120 / 2

y = 60 -> ( 3 )

Substitute ( 3 ) into ( 1 ):

x = y - 28 -> ( 1 )

x = ( 60 ) - 28

x = 32

Therefore:

x = 32 , y = 60

7 0
3 years ago
Ms. Jamell had some candy. She ate 5 pieces and split the rest evenly among 8 students. Each student got 4 pieces of candy. Writ
Usimov [2.4K]

Answer:

4x8=32 -5=27

Step-by-step explanation:

4 0
3 years ago
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