When designing a building, you must be sure that the building can withstand hurricane-force winds, which have a velocity of 73 m
i/h or more. The formula f=0.004av^2 gives the force F in pounds exerted by a wind blowing against a flat surface. A is the area of the surface in square feet, and v is the wind velocity in miles per hour. How much force is exerted by a wind blowing at 81 mi/h against the side of the building shown?
2 answers:
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<span>13x/5 - 4x/5
</span> What you must do in this case is a sum of fractions.
Step 1:
Common factor 5 in the denominator
Step 2:
Perform subtraction of numerator
Step 3:
Rewrite the expression.
See attached image.
Answer:
a. 9x/5
</span> What you must do in this case is a sum of fractions.
Step 1:
Common factor 5 in the denominator
Step 2:
Perform subtraction of numerator
Step 3:
Rewrite the expression.
See attached image.
Answer:
a. 9x/5
Answer: Quadrant 2
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Explanation:
Check out the diagram below. An example point in the third quadrant is (-2,-5). This quadrant is the southwest quadrant. Reflect the example point over the x axis (aka the line y = 0) and we get (-2,5). This is shown when we go from point A to point B in the diagram.
The reflection rule is showing that only the y coordinate changes from y to -y. If y is negative, then flip to positive, or vice versa. The x coordinate stays the same.
The point started in quadrant 3 and it moves to quadrant 2 after the reflection over the line y = 0.
Side note: all points on the line y = 0 have a y coordinate of 0
