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Anuta_ua [19.1K]
3 years ago
14

A number decreased by 24 is -1

Mathematics
1 answer:
Zarrin [17]3 years ago
7 0

Answer:

23

Step-by-step explanation:

23 - 24 = -1

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Add: 3/8 + 1/8 + 2/8
Ghella [55]

The answer to 3/8+ 1/8 + 2/8 = 0.75 or 3/4

4 0
3 years ago
Use the normal distribution and the given sample results to complete the test of the given hypotheses. Assume the results come f
AlladinOne [14]

Answer:

z=\frac{0.64 -0.5}{\sqrt{\frac{0.5(1-0.5)}{75}}}=2.43  

Now we can calculate the p value with the following probability:

p_v =P(z>2.43)=0.0075 \approx 0.008  

Since the p value is lower than the significance level we have enough evidence to reject the null hypothesis and we can conclude that the true proportion for this case is higher than 0.5

Step-by-step explanation:

Data given and notation

n=75 represent the random sample taken

\hat p=0.64 estimated proportion of interest

p_o=0.5 is the value that we want to test

\alpha=0.05 represent the significance level

Confidence=95% or 0.95

z would represent the statistic

p_v represent the p value

System of hypothesis

We want to verify if the true proportion is higher than 0.5:  

Null hypothesis:p =0.5  

Alternative hypothesis:p > 0.5  

The statistic is given by:

z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}} (1)  

Replacing the info given we got:

z=\frac{0.64 -0.5}{\sqrt{\frac{0.5(1-0.5)}{75}}}=2.43  

Now we can calculate the p value with the following probability:

p_v =P(z>2.43)=0.0075 \approx 0.008  

Since the p value is lower than the significance level we have enough evidence to reject the null hypothesis and we can conclude that the true proportion for this case is higher than 0.5

7 0
3 years ago
PLEASE HELP!!!
Nuetrik [128]

Answer:

+2Na

Step-by-step explanation:

its like algebra kinda when you have a 3y or 2x your Na ion is multiplied by 2 becoming 2Na

3 0
3 years ago
Pls help me answer my worksheet
bearhunter [10]
Step one know that across from 128 is 128 because of vertical angles
step two a straight line =180 so 128 -180 = 52
step three know you know 3k+4=52 so subtract 4 from 52 and that gives you 48 then divide by 3 to find k and 48/3 is 16
so k +16
because 16x3 is 48 then add 4 which is 52 and 52 plus 128 is 180
8 0
2 years ago
The surface area of a right square pyramid is 50 square inches. If the sides of the base and the slant height of the pyramid are
AnnyKZ [126]

Answer:

C

Step-by-step explanation:

Hope it helpssss

5 0
2 years ago
Read 2 more answers
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