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Elan Coil [88]
3 years ago
6

Use mental math to find us some draw or describe the strategy you used 52+19 = 71

Mathematics
1 answer:
Rina8888 [55]3 years ago
7 0
1. Set up long addition.
   
  5 2
+1 9
______

2. Calculate 2+ 9, which is 11.
Since 11 is two-digit, we carry the first digit 1 to
the next column.
  1
  5 2
+1 9 
_____
      1

3. Calculate 5+1, which is 6. Now add the 
carry digit of 1, which is 7.
   1
   5 2
+ 1 9
______
    7 1

4. Therefore, 52 + 19 = 71.

71

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part A)

\bf \begin{array}{ccllll}
hours(x)&velocity(y)\\
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1&6\\
3&2
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\bf \begin{array}{lllll}
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%   (a,b)
&({{ 1}}\quad ,&{{ 6}})\quad 
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% slope  = m
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part B)

well, we know y = -2x+8.... so.. what's the runner's velocity after 5hours? well, x = 5, thus y = -2(5) +8 ---> y = -2

to graph it, well, is a LINEar equation, meaning the graph is a LINE, and to graph a line, all you need is two points, and by now, you have more than two.. so graph it away.
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pochemuha

<u>Answer</u><u>:</u>

1/2,3/5,5/8,7/11,9/14,11/17

<u>Explanation</u><u>:</u>

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