margin has four books to read for homework this week. if he reads 2/3 of a book each night . how many nights will it take him to
1 answer:
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We are given that 
.
Substitute x with 5-x, then the above equation becomes:
, that is
So, we have the following system of equations:
i)
ii)
multiply the first equation by -4, so that we eliminate f(5-x)'s
i)
ii)
adding the 2 equations side by side we have:
expanding the binomial, and collecting same terms we have:
dividing by -5:
dividing by 3:
Answer:
Substitute x with 5-x, then the above equation becomes:
So, we have the following system of equations:
i)
ii)
multiply the first equation by -4, so that we eliminate f(5-x)'s
i)
ii)
adding the 2 equations side by side we have:
expanding the binomial, and collecting same terms we have:
dividing by -5:
dividing by 3:
Answer:
As for the right angle triangle the ratio of opposite side to the hypotenuse side is equal to the sine angle.
The distance of the top of the slide from the ground is 24 foot (to nearest foot). Thus option 3 is the correct option.
<h3>What is right angle triangle?</h3>A right angle triangle is a triangle in which, one of the angle measures equals to the 9 degrees.
Given information
The angle of depression from top of the slide to the pool is 31. 66°.
The height of the slide is 46 feet.
Image is attached below for the given problem.
As for the right angle triangle the ratio of opposite side to the hypotenuse side is equal to the sine angle.
Thus,
Hence the distance of the top of the slide from the ground is 24 foot (to nearest foot). Thus option 3 is the correct option.
Learn more about the right angle triangle here;
