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EleoNora [17]
3 years ago
7

Byron placed bricks in a row to make a border that was 16.9 feet long. Each brick is 1.3 feet long. How many bricks are in the b

order? A. 13 B. 12 C. 1.3 D. 1.2
Mathematics
2 answers:
skelet666 [1.2K]3 years ago
4 0
If each brick is exactly 1.3 feet, diving 16.9 by 1.3 will produce the exact amount of bricks used. 

16.9 ÷1.3 = 13

There are 13 bricks in the border (the answer is A.)
IgorLugansk [536]3 years ago
3 0
The answer is A. 13, because 16.9/1.3= 13


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AnnZ [28]

20 to 18

20:18

20/ 18

Step-by-step explanation:

Ratios can be writen in 3 different formats. You can write your ratios in fraction form (Example- 20/18), colan form, (Example- 20:18) and finaly word form (Example- 20 to 18). Hope this was acurate and helpful. Have a magical rest of your day!

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Mary took 8 tests in science and received the following scores: 87,60,76,92,63,91,88,75
MariettaO [177]

Answers:

  • mean = 79
  • mode = none
  • median = 81.5

=================================================

Explanation:

To get the mean, you add up the numbers and then divide by n = 8, since there are 8 scores

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Divide that over n = 8 to get 632/n = 632/8 = 79

The mean is 79

You have the correct answer. Nice work.

---------------

The mode is the most frequent value.

In this data set, we don't have any repeated values. Each unique number is listed one time only. So that tells us we don't have a mode here.

---------------

To get the median, we need to sort the items from smallest to largest

{87,60,76,92,63,91,88,75} sorts to {60,63,75,76,87,88,91,92}

Because we have n = 8 values, which is an even number, this tells us that the median is between slot n/2 = 8/2 = 4 and slot 5

The values 76,87 are in slots four and five in that order. Add them up and divide by 2:  (76+87)/2 = 163/2 = 81.5 is the median

3 0
3 years ago
Isaac is 3 years older than Rachael. In 4 years the sum of their ages will be 75. How old is Isaac now?
MatroZZZ [7]

Answer:

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Step-by-step explanation:

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2x+11 = 75

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x = 32

Rachel is 32 years old. Isaac is 3 years older, which is 35 years old.

Hope this helped! If you need any help, tell me in the comments.

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Kelly will burn 960 calories if she runs 8 miles
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Answer:

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