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Damm [24]
2 years ago
6

I dont know this It is always wrong and I need help quick

Mathematics
2 answers:
bija089 [108]2 years ago
8 0
Whats always wrong i cant really see the atatchmet so tell me what it is and i will help
irga5000 [103]2 years ago
7 0
Looks like you have a 7x7 square a 17x3 rectangle anf a 25x15 rectangle. calculate those areas and add them together.
You might be interested in
The makers of a soft drink want to identify the average age of its consumers. A sample of 25 consumers was taken. The average ag
Lelu [443]

Answer:

a.1.90 years

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.99}{2} = 0.005

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.005 = 0.995, so z = 2.575

Now, find the margin of error M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

In this question:

n = 25, \sigma = 3.8

So

M = 2.575*\frac{3.8}{\sqrt{25}} = 1.90

So the correct answer is:

a.1.90 years

8 0
3 years ago
At a rock concert, the ratio of girls to boys is 3:7. If there are 360 more boys than girls, how many girls are at the concert?
bixtya [17]
You could understand the ration as parts: the total number of parts was 3+7=10.

So girls were 3/10 parts and boys 7/10 parts. The difference was 7-3=4 parts. this difference is equal to 360, so each part is 90 (4*90 =360).

so girls are "3 parts" and each part is 90, then the number of girls is 3*90=270.
4 0
3 years ago
Which situation shows a constant rate of change
damaskus [11]

Answer: the amount a person pays for gas compared with the number of gallons purchased

Step-by-step explanation:

5 0
3 years ago
What is 1,000×200<br><br><br>help me pls
dybincka [34]
1000*200=200000
This will be your answer
thanks
4 0
3 years ago
At a school assembly four out of the first 10
Ilya [14]

Answer:

125

Step-by-step explanation:

Well if 10 x 50 is 500 (just to show how you get doesn't affect problem) you would simply divide by 4 thus, you get 125 (edit: sorry if this is wrong I'm in my first year of middle lol)

5 0
3 years ago
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