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Liula [17]
2 years ago
13

Ariel weighed an object on her balance and recorded a mass of 24.3 grams.Her teacher told her that there was something wrong wit

h her balance because it was giving her a reading which was 30.0% too high. What was the actual mass of the object?
Mathematics
1 answer:
grin007 [14]2 years ago
4 0
For this case what we can do is the following rule of three:
 24.3 -----> 130%
 x ---------> 100%
 We clear the value of x:
 x = (100/130) * (24.3)
 x = 18.7 grams
 Answer:
 
the current mass of the object was:
 
x = 18.7 grams
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2 years ago
Vivian surveyed bicyclists in her community to see the average number of miles they biked per day. Her results are shown below.
Alex

Answer:

MAD of her data set is 4.

Step-by-step explanation:

Vivian surveyed bicyclists in her community to see the average number of miles they biked per day.

The data set is given below :

7, 10, 13, 4, 12, 21, 10, 3

mean=\frac{\text{Sum of data set}}{\text{number of values}}

=\frac{(7+10+13+4+12+21+10+3)}{8}

=\frac{80}{8}

= 10

MAD=\frac{\sum |A_1-f_1|}{n}

              Data point          Distance from mean

                                             

1                  7                           7 - 10   =     | -3 |     = 3

2.                10                         10 - 10  =     | 0 |       = 0

3.                13                          13 - 10  =     | 3 |     = 3

4.                4                           4 - 10    =    | -6 |    = 6

5.               12                          12 - 10   =    | 2 |     = 2

6.               21                          21 - 10   =    | 11 |   = 11

7.               10                          10 - 10   =    | 0 |     = 0

8.               3                            3 - 10   =    | -7 |   = 7

                                               

Adding the distance = 3 + 0 + 3 + 6 + 2 + 11 + 0 + 7 = 32

MAD = \frac{32}{8} = 4

MAD of her data set is 4.

Mean Absolute Deviation of this data tells about the variation of 4 miles biked each day by the bicyclists.

6 0
2 years ago
A customer's stock value seems to be rising exponentially. The equation for
Rasek [7]
<h2>Hello!</h2>

The answer is:

The correct option is A. 8.3.

<h2>Why?</h2>

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Have a nice day!

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Step-by-step explanation:

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