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Taya2010 [7]
4 years ago
8

What is 1.21 repeating as a decimal?

Mathematics
2 answers:
sp2606 [1]4 years ago
4 0
It would be 1.21 with a bar over the top of the 21. 
The bar signifies repetition. 

Hope this helps!
Marina86 [1]4 years ago
3 0
It is 21 in that format
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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.

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3 years ago
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Help. How to solve9d + n = 5r
coldgirl [10]

We want to rewrite the following equation

9d+n=5r

With d as a function of the other terms. Let's start by subtracting n from both sides.

\begin{gathered} 9d+n-n=5r-n \\ 9d=5r-n \end{gathered}

Now, let's divide both sides by 9.

\begin{gathered} \frac{9d}{9}=\frac{5r-n}{9} \\  \\ d=\frac{5r-n}{9} \end{gathered}

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1 year ago
A right rectangular prism has length 3 and one third yd​, width 2 and one third yd​, and height 1 and one third yd. You use cube
Levart [38]

Answer:

Volume of the rectangular prism = 280 cubes

Volume of the rectangular prism = (280/27) yd³

Step-by-step explanation:

length 3 and one third yd​ = 3 + (1/3) yd = (10/3) yd

width 2 and one third yd​ = 2 + (1/3) yd = (7/3) yd

height 1 and one third yd = 1 + (1/3) yd = (4/3) yd

Cubes of edge length (1/3) yd are used to fill the rectangular prism.

The length would contain (10/3) ÷ (1/3) = 10

The width would contain (7/3) ÷ (1/3) = 7

The height would contain (4/3) ÷ (1/3) = 4

Volume of the rectangular prism = 10×7×4 = 280 cubes

Or

Volume of rectangular prism = (10/3)(7/3)(4/3) = (280/27) yd³

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3 years ago
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Sure thing!
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