Solve:4x+3y=20;4x+2y=10 by matrix method
1 answer:
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If we know that 30% of the time is used after 9 minutes we can write this mathematically as:
By solving for x we can determine the total time allowed to play games and so:
The total time allowed to play games is 30 minutes. Since 9 minutes have lapsed 30-9=21 minutes left to play.
By solving for x we can determine the total time allowed to play games and so:
The total time allowed to play games is 30 minutes. Since 9 minutes have lapsed 30-9=21 minutes left to play.
<h3>Answer: 41.19 degrees</h3>
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Work Shown:
See the diagram below.
tan(angle) = opposite/adjacent
tan(A) = BC/AC
tan(A) = 7/8
A = arctan(7/8)
A = 41.1859252
A = 41.19 degrees
In your calculator
Divide 56.25 by 4.5
That should equal 12.50
To double check you can
12.50 x 4.5 = 56.25
Divide 56.25 by 4.5
That should equal 12.50
To double check you can
12.50 x 4.5 = 56.25