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Leto [7]
2 years ago
7

Find the slope of the line that contains the following points: (2, 12) and (4, -24)

Mathematics
1 answer:
TiliK225 [7]2 years ago
8 0

Answer:

slope is change in rise(y) over change in run (x), change in y here is 36 and change in x is 2, slope is 36/2=18

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Yo I’m I’m stuck on this. <br> can I get some help pls
ikadub [295]

Answer:

Which problem?

Step-by-step explanation:

7 0
2 years ago
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Researchers fed mice a specific amount of Toxaphene, a poisonous pesticide, and studied their nervous systems to find out why To
Mkey [24]

Answer:

a. The mean refractory period= 1.85 and the standard error = 0.06455

b.  90% confidence interval for the mean absolute refractory period for all mice when subjected to the same treatment = 1.6981, 2.0019

c. Yes, the data give good evidence to support this theory

Step-by-step explanation:

a.  The table below shows the calculations:

                 X                (X-mean)^2

                1.7             0.0225

                1.8                 0.0025

                1.9                 0.0025

                2.0                 0.0225

Total        7.4                  0.05

Sample size: n=4

The mean is:  \bar{x} = \frac{7.4}{4} = 1.85

The sample standard deviation, s = \sqrt{\frac{\sum \left ( x-\bar{x} \right )^{2}}{n-1}}=0.1291

The standard error, se= \frac{s}{\sqrt{n}}=\frac{0.1291}{2} = 0.06455

b. Degree of freedom: df = n-1 = 3

Critical value of t for 90% confidence interval is: 2.3534

The confidence interval is  \bar{x}\pm t_{c}se = 1.85\pm 2.3534\cdot 0.06455=1.85\pm 0.1519 = (1.6981, 2.0019)

c. The Hypotheses are:

H_{0}:\mu=1.3,H_{1}:\mu>1.3

So the test statistics will be

t=\frac{\bar{x}-\mu}{s/\sqrt{n}}=8.52

The p-value is: 0.0017

We reject the null hypothesis because p-value is less than 0.05 . This indicates that the data gave good evidence to support this theory.

4 0
3 years ago
2. Sequoia trees can grow to more than 90 m in
sashaice [31]

Answer: F

Step-by-step explanation: 90/3.28 equals 27.4390244

5 0
2 years ago
Help me all the questions, explain you answers plssssss
BartSMP [9]
Is there a grid that came with the problem?
8 0
2 years ago
PLS HELP ILL GIVE BRAINLIEST
cluponka [151]

So you start of by finding the median. The median in this case would be 43. Then you find the median of both the lower (36) and the upper (53) half of the data. Then the find the difference between those two number. So you would do 53-36 which would make the answer 17

8 0
3 years ago
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