The child crawled 18 meters in 823 seconds.
Given:
A child is crawling at a pace of 176 inches every 3.37 minutes.
To find:
The distance covered (in meters) by a child in 823 seconds.
Solution:
Distance covered by a child in 3.37 minutes = 176 inches
Distance covered by a child in a 1 minute = 
1 minute = 60 seconds
Distance covered by a child in 60 seconds = 
Distance covered by a child in a 1 second:

Distance covered by a child in 823 seconds:

In 1 meter there are 39.37 inches.

The child crawled 18 meters in 823 seconds.
Learn more about the unitary method here:
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Answer:
m∠C = 122°
Step-by-step explanation:
Opposite angles of a quadrilateral inscribed in a circle are supplementary. This means
m∠A + m∠C = 180°
m∠B + m∠D = 180°
To find angle C we need to find x, then subtract m∠A from 180°
x+20=3x
20=2x
x=10
Now we substitute 10 in for x
m∠A=2(10)+38
m∠A=20+38
m∠A=58°
Now we subtract this value from 180.
m∠C=180-58
m∠C=122°
What is this,no question here
The answer to your question is Line Correlation .
64 - 9 = 55 \sqrt{55} = 7.4161984871
7.4161984871/2 ≈3.7