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pochemuha
4 years ago
12

What is the original price

Mathematics
1 answer:
eimsori [14]4 years ago
8 0
Sorry sir... but the screen is blurry. ; u ;
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Here are the prices of five new pairs of hockey skates, in dollars: 59, 60, 65, 99, 175. The standard deviation is about $49. If
Phoenix [80]

Answer:

The standard deviation of the new data will be increased as compared to the previous standard deviation of the data.

Step-by-step explanation:

The prices are given to be : 59, 60, 65, 99, 175

Standard deviation = $49

Now, if we add or subtract any constant value to each of the terms then the standard deviation remains unchanged.

But, we add a new price in the given data that is $450

\text{New standard deviation = }\sqrt{\frac{\sum (\bar{x}-x_i)^2}{n}}\\\\\bar{x}\text{ is the mean of data after adding 450 and}\\x_i\text{ are the price values of the sample data}

Hence, Standard deviation is calculated to be 139.5

Therefore, the standard deviation of the new data will be increased as compared to the previous standard deviation of the data.

6 0
3 years ago
Read 2 more answers
Calculate the average rate of change of y=x2+3x−2 on the interval 1≤x≤2
Artyom0805 [142]

Answer:

The rate of change for the given function is 6.

Step-by-step explanation:

Given function is:

y = x^2+3x-2

The interval on which we have to find the rate of change is:

1≤x≤2

Here

a = 1

b = 2

We have to find the values of function on both points

Putting 1 in place of input (x)

y_a= (1)^2+3(1)-2\\= 1+3-2\\=2

Putting x = 2

y_b = (2)^2+3(2)-2\\= 4+6-2\\=8

The rate of change is calculated by using the following formula

Rate\ of\ change = \frac{y_b-y_a}{b-a}\\=\frac{8-2}{2-1}\\= \frac{6}{1}\\=6

Hence,

The rate of change for the given function is 6.

3 0
3 years ago
42 decreased by the product of 12 and a nummber 6
borishaifa [10]
42-(12*6)

42-(72)

=-30
4 0
4 years ago
Given cos A 0.42, find angle A in degrees. Round your answer to the nearest hundredth.
kow [346]

Answer:


Step-by-step explanation:

22.78.................................

5 0
4 years ago
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A rectangle garden has an area of a 144 ft.² if the base is 8ft long what is the height
stepan [7]

Answer:

18 ft

Step-by-step explanation:

The area of a rectangle is given by

A = l*w

144 = 8w

Divide each side by 8

144/8 =w

18 =w

3 0
3 years ago
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