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Elza [17]
3 years ago
6

What is the slope of the line?

Mathematics
2 answers:
allsm [11]3 years ago
5 0

Answer:

The slope is 3

Step-by-step explanation:

Pick two points (0,-2) and (1,1)

The slope of the line is found by

m = (y2-y1)/(x2-x1)

    = (1--2)/(1-0)

    = (1+2)/1

    =3

Valentin [98]3 years ago
3 0

Answer:

The slope is three

Step-by-step explanation:

count up from the bottom point until you reach -1 then go over one and you will get 3/1.

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Answer question number 5 only.
irinina [24]

Answer:

θ = π<em>n</em>

<em />

Step-by-step explanation:

6 0
2 years ago
Emissions of sulfur dioxide by industry sett off chemical changes in the atmosphere that result in "acid rain". The acidity of l
horsena [70]

Answer:

Case n =5

z=\frac{4.8-5}{\frac{0.5}{\sqrt{5}}}=-0.894  

Case n =15

z=\frac{4.8-5}{\frac{0.5}{\sqrt{15}}}=-1.549  

Case n = 40

z=\frac{4.8-5}{\frac{0.5}{\sqrt{40}}}=-2.530  

P value

Case n =5

p_v =P(z  

Case n =15

p_v =P(z  

Case n =40

p_v =P(z  

Step-by-step explanation:

Data given and notation  

\bar X=4.8 represent the sample mean

\sigma=0.5 represent the population standard deviation

n sample size  

\mu_o =5 represent the value that we want to test  

\alpha represent the significance level for the hypothesis test.  

z would represent the statistic (variable of interest)  

p_v represent the p value for the test (variable of interest)  

State the null and alternative hypotheses.  

We need to conduct a hypothesis in order to check if the mean is lower than 5, the system of hypothesis would be:  

Null hypothesis:\mu \geq 5  

Alternative hypothesis:\mu < 5  

Since we know the population deviation, is better apply a z test to compare the actual mean to the reference value, and the statistic is given by:  

z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}} (1)  

z-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".  

Calculate the statistic  

We can replace in formula (1) the info given like this:  

Case n =5

z=\frac{4.8-5}{\frac{0.5}{\sqrt{5}}}=-0.894  

Case n =15

z=\frac{4.8-5}{\frac{0.5}{\sqrt{15}}}=-1.549  

Case n = 40

z=\frac{4.8-5}{\frac{0.5}{\sqrt{40}}}=-2.530  

P-value  

Since is a left tailed test the p value would be:  

Case n =5

p_v =P(z  

Case n =15

p_v =P(z  

Case n =40

p_v =P(z  

5 0
3 years ago
Determine the sum of the following series. ∑n=1[infinity](4^n+8^n/13n)
Gnoma [55]
N=1 4+7n=71 that is the answer
3 0
2 years ago
Which weighs the least 2 centigrams 2 grams 2 hectograms 2 kilograms or 2 milligrams
Mekhanik [1.2K]
To answer the question above, use conversion factors and dimensional analysis. In this given, it is easier to use grams as the basis. 

a. (2 centrigrams) x (1 gram / 100 centigrams) = 0.02 grams
b. 2 grams 
c. (2 hectograms) x (1 gram / 0.01 hectogram) = 200 grams
d. (2 kilograms) x (1 gram / 0.001 kilogram) = 2000 grams
e. (2 milligrams) x (1 gram / 1000 millimeters) = 0.002 grams

Thus, the answer is 2 milligrams. 
7 0
3 years ago
What is 9-3y=x I don't know this one
torisob [31]
The answer is 
y= - x-9/3 I believe.
1- Subtract 9 from both sides.
-3y = x - 9
2- Divide both sides by -3
y = - x-9/3
4 0
3 years ago
Read 2 more answers
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