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polet [3.4K]
3 years ago
11

PLEASE HELP!!!

Mathematics
1 answer:
ivann1987 [24]3 years ago
7 0

Answer:

an = 0.5^n−1

Step-by-step explanation:

Use the formula :

a_n = a_1r^n−1

To identify the geometric sequence.

an = 0.5^n−1

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Silicone implant augmentation rhinoplasty is used to correct congenital nose deformities. The success of the procedure depends o
erik [133]

Answer:

The 95% confidence interval for the true average strain is between 23.94% and 28.06%.

Step-by-step explanation:

We have the standard deviation of the sample, so we use the t-distribution to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 13 - 1 = 12

95% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 12 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.95}{2} = 0.975. So we have T = 2.18

The margin of error is:

M = T\frac{s}{\sqrt{n}} = 2.18\frac{3.4}{\sqrt{13}} = 2.06

In which s is the standard deviation of the sample and n is the size of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 26 - 2.06 = 23.94

The upper end of the interval is the sample mean added to M. So it is 26 + 2.06 = 28.06

The 95% confidence interval for the true average strain is between 23.94% and 28.06%.

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3 years ago
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The library has allotted $480 for spring landscaping and has decided
Mazyrski [523]

Answer:

a. x = roses

   y= lavender

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5 0
2 years ago
Your class is selling boxes of flower seeds as a fundraiser. The total profit p depends on the amount x that your class charges
Slav-nsk [51]

Answer:

$ 22.6

Step-by-step explanation:

Given that

Price charged for each box of seeds = x

Profit gained from from selling boxes of seeds = p

The equation of profit is modeled as

P(x) = 0.5x² + 36x - 179

As per given information if the fundraisers make a profit of  $379 then find the minimum price charged for each box of seed.

Now our above equation becomes

379 = -0.5x² + 36x - 179

Simplifying

379+179 = -0.5x² + 36x

558 = -0.5x² + 36x

0.5x² - 36x + 558 =0

multipying both sides of equation by 2

2(0.5x² - 36x + 558) = 2x0

x² - 72x +1116 = 0

Using quadratic formula we get the following factors

x= 49.4 or x= 22.60

As we can the smalles value is 22.6

So, they can charge 22.6 dollar for each bag of seeds in order to get profit of 379 dollars.



8 0
3 years ago
Read 2 more answers
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