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leva [86]
4 years ago
8

While exercising Ricardo walked 1/8 of a mile in 1/9 of an hour. At this rate, how far will he have travelled after an hour?

Mathematics
1 answer:
SSSSS [86.1K]4 years ago
6 0

\bf \begin{array}{ccll} miles&hours\\ \cline{1-2}\\ \frac{1}{8}&\frac{1}{9}\\\\ x&1 \end{array}\implies \cfrac{~~\frac{1}{8}~~}{x}=\cfrac{~~\frac{1}{9}~~}{1}\implies \cfrac{~~\frac{1}{8}~~}{\frac{x}{1}}=\cfrac{1}{9}\implies \cfrac{1}{8x}=\cfrac{1}{9} \\\\\\ 9=8x\implies \cfrac{9}{8}=x\implies 1\frac{1}{8}=x

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What is the answer for this 19/20-1800 Answer with whole numbers
katrin2010 [14]

Answer:

<h2>1710</h2>

Step-by-step explanation:

I think it's 19/20 from 1800.

<h2>19/20 *1800=19*90=1710</h2>
4 0
3 years ago
Fill in the blanks below in order to justify whether or not the mapping shown
Mumz [18]

Answer:

For each number in set A, there is one mapping from set A (input) to set B (output), so the mapping represents a function

Step-by-step explanation:

The relation is a function if and only if each input value has only 1 output value

<u><em>Examples:</em></u>

  1. The relation {(1, 2), (-3, 5), (0, 10)} is a function because every input has only one output, the input 1 has only output 2, the input -3 has only output 5, the input 0 has only output 10
  2. The relation {(-1, -2), (3, -5), (-1, 1)} is not a function because the input -1 has two outputs -2 and 1

Let us solve the question

Use the given figure to find the inputs and their corresponding outputs

Set A →→→→ Set B

∵    -3 →→→→ 2

∵    -4 →→→→ 4

∵     9 →→→→ -2

∵      1 →→→→ 7

∵ Set A is the input and set B is the output

∵ There is only one arrow go from each value in set A to a value in set B

∴ For each number in set A, there is one mapping from set A to set B

∴ The mapping represents a function

For each number in set A, there is one mapping from set A (input) to set B (output), so the mapping represents a function

4 0
3 years ago
Express this in scientific notation 13,040,000
castortr0y [4]
First, to rewrite something in scientific notation, we want to move the decimal point a number of times to the right or left to end with a number between 0 and 10. In this case, we want to move the decimal point 7 times to the left to get the number 1.304. In scientific notation, this would be the same as 1.304*10^7.

I hope this helps!
3 0
4 years ago
I need help with #42!!
MA_775_DIABLO [31]

well u have to find the different of 360-356 which would be=4 and if u were going to round it to the tenth then it would be 4% still
8 0
4 years ago
78% of 380 round to the nearest thenth if necessary
Crank
So I learned this really cool way of finding percents of numbers in my 7th grade math class, hopefully this will help! 
In most percent word problems it will have specific wording. For example: What is 25% of 100. Or 75 is 30% of what number? Those are examples of some of the wording (and random numbers) those word problems might use.
The trick is: \frac{is}{of} =  \frac{percent}{100} 

so if i have a word problem that says: what IS 15% of 600? here is how your equation would look. \frac{x}{600} =  \frac{15}{100} 
Because you don't know what the "is" is, then you would put x there. If it say 40 is 17% of what? than it would look like this... \frac{40}{x} =  \frac{17}{100}
To solve just cross multiply or use basic algebra to solve. Using basic algrbra on that last problem I just wrote out would look like this: x= \frac{40 * 100}{17}
4 0
3 years ago
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