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Anarel [89]
3 years ago
7

Is the sequence an= 4 + 2n arithmetic?​

Mathematics
1 answer:
Marysya12 [62]3 years ago
3 0

Answer:

Sorry am not answer that because am desperate for points so am just going to get some points

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The amount of grass seed needed to cover a lawn is proportional to its area. The lawn is rectangular and has an area of 2c^2 + 2
natka813 [3]
2c is a factor of both terms.
.. area = 2c(c+1)

Possible expressions for length and width are
  1, 2, c, 2c, c+1, 2(c+1), c(c+1), 2c(c+1).
7 0
4 years ago
The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on
Mekhanik [1.2K]

Answer:

so it looks like you want to find a 98% confidence interval and using a T value. So we have our X bar plus or minus a T. Star value times the standard deviation divided by the square root of van. And you had a sample of size 17 which yielded a mean of 32 that it lowered it by 32 the standard deviation was 15. And so we need to find the T. Star value. Now, subtle hint if you don't have a table on you, which I don't and I could always look it up online, but if I want the 98% confidence interval, that means I want the area down at this table to be 980.1 and I want my degrees of freedom to be 16. So I'm actually going to use my inverse, go to second and distribution and use my inverse T button on my T. I 84 and I put the area as 0.1 and my degrees of freedom as 16. And and then just enter in and I find out what that T. Star value is. This value is negative 2.583 and this value is 2.583 So now I have my T. Star value. You can also look it up in your in a table so we know that we'll have 32 plus or minus that T star value 2.583 times the standard deviation which is 15 over the square root of an Okay. And so I'm going to type in that 30 to minus 2.583 times the 15 divided by the square root of 17. And try to type it in right? And that gives me, my lower limit is 22.603 And my upper limit now I can go back and just change that subtraction sign to addition sign. And that gives me up to 41.397 So there's the confidence interval, the 98% confidence interval. And yes, you would. Uh that confidence interval, the mean would be unknown. Mhm. The standard deviation of the population is unknown because of the small sample size. We would like to have an approximate normal distribution, which means we would like to see a graph of those 17 numbers to make sure that they're approximately normal. And definitely we would like to have that be a simple random sample and it's not going to be most likely a simple random sample, but hopefully it's at least representative of what a simple random sample would be. Mhm.

3 0
2 years ago
I need help checking these
insens350 [35]

Answer:

180cm^2 & 472ft^2

Step-by-step explanation:

answer of 16 number

h2=p2+b2 ,therefore

h=100+80

h=180

answer of question 17

h2=p2+b2

576=p2+104

576-104=p2

472=p2

6 0
3 years ago
Can you guys distribute this problem and then figure out how many solutions does this problem have 5(m-3)=7m-17
Cloud [144]
                         5 (m - 3)  =  7m - 17

Eliminate
parentheses:        5m - 15  =  7m - 17

Subtract 5m
from each side:          - 15  =  2m - 17

Add 17
to each side:                  2  =  2m

Divide
each side
by  2 :                            1  =  m  

No more solutions.
Only one.

6 0
3 years ago
Question number 29 you work in the shipping department of an organic food company and need to calculate the net weight of a jar
umka2103 [35]

The net weight of a jar of raspberry preserves will be 4.45 ounces.

The volume of the cylinder can be calculated as the product of the base of the cylinder and the height of cylinder.

The volume of cylinder= base of cylinder * height of the cylinder

⇒ volume of cylinder = πd²*h/4

Here, given that

the inside diameter of the cylinder is 1.5 inches.

d= 1.5 inches

the inside height of the cylinder is 4.75 inches.

h= 4.75 inches

putting these above values for calculating the volume of the cylinder

Volume =V = πd²*h/4

⇒ V= π*(1.5)²*4.75/4

⇒V = 8.40 cube inches

Given that the raspberry preserve weighs 0.53 ounces per one cubic.

for one cubic the weight is 0.53 ounces

for 8.40 cubic the weight will be 8.40*0.53= 4.45 ounces

Therefore The net weight of a jar of raspberry preserves will be 4.45 ounces.

Learn more about volume of the cylinder

here: brainly.com/question/9554871

#SPJ10

5 0
2 years ago
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