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cancerbaby209
28.02.2021 •
Mathematics
Math question #1 please show steps
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Ответ:
C
Step-by-step explanation:
An approximation of an integral is given by:
First, find Δx. Our a = 2 and b = 8:
The left endpoint is modeled with:
And the right endpoint is modeled with:
Since we are using a Left Riemann Sum, we will use the first equation.
Our function is:
Therefore:
By substitution:
Putting it all together:
Thus, our answer is C.
*Note: Not sure why they placed the exponent outside the cosine. Perhaps it was a typo. But C will most likely be the correct answer regardless.
Ответ:
to cover all 4 wheels.
Step-by-step explanation:
#The circumference of each wheel is given as
Circumference is given by the formula:
#From this, we calculate the length of felt needed for the 4 wheels:
Area of each circular wheel is calculated using the formula:
Hence 705.92 sq in is needed to cover each wheel and 2823.66 sq in to cover all the 4 wheels.