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PilotLPTM [1.2K]
2 years ago
15

4 What is the slope of the line represented by the table of values below?

Mathematics
1 answer:
Kobotan [32]2 years ago
8 0

Answer:

(c) or 10 is the answer

Step-by-step explanation:

In order to find slope you have to follow the formula

(y2-y1) / (x2-x1)

That would give you the slope which in this case is 10.

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Simplify 4a+3b-(-2a-3b)
Talja [164]
4a+3b-(-2a-3b)
=4a+3b+2a+3b
=6a+6b
=6(a+b)
8 0
3 years ago
Two groups of students were asked how far they lived from their school. The table below shows the distances in miles:
garri49 [273]
The mean distance for a group is the sum of individual numbers over the number of data. The mean distance of Group A is (1+1.5+3+3.2+2.8+1.5+1.8+2.5+2.2)/9=2.17 The mean distance of Group B is (<span>2+2.5+3.2+3+1.8+2.4+3+1.5+1.8)/9=2.36. Therefore, the mean is greater for group B than group A, but not doubling.</span>
3 0
2 years ago
Read 2 more answers
Our environment is very sensitive to the amount of ozone in the upper atmosphere. The level of ozone normally found is 7.1 parts
satela [25.4K]

Answer:

t=\frac{6.6-7.1}{\frac{1.0}{\sqrt{26}}}=-2.550    

Step-by-step explanation:

Data given and notation  

\bar X=6.6 represent the sample mean

s=1.0 represent the sample standard deviation

n=26 sample size  

\mu_o =7.1 represent the value that we want to test

\alpha=0.01 represent the significance level for the hypothesis test.  

t 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 true mean is different from 7.1 ppm, the system of hypothesis would be:  

Null hypothesis:\mu = 7.1  

Alternative hypothesis:\mu \neq 7.1  

If we analyze the size for the sample is < 30 and we don't know the population deviation so is better apply a t test to compare the actual mean to the reference value, and the statistic is given by:  

t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}  (1)  

t-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:  

t=\frac{6.6-7.1}{\frac{1.0}{\sqrt{26}}}=-2.550    

5 0
3 years ago
Graph the opposite of the opposite of 10 on the number line
Afina-wow [57]

Answer:

the opposite of 10 is -10

Step-by-step explanation:

Graph it on -10

6 0
3 years ago
Read 2 more answers
2 (4 minus 3 x) + 5 (2 x minus 3) = 20 minus 5 x?
bonufazy [111]

Answer:

x=3

Step-by-step explanation:

2(4-3x)+5(2x-3)=20-5x

8-6x + 10x - 15= 20-5x

subtract 8 from 15

subtract 6x from 10x getting you

4x-7= 20-5x

add 5x to both sides

add 7 to both sides

getting you

9x=27

divide by 9 to both side getting you x=3

3 0
3 years ago
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