Monica reads 20 pages from her new book on Saturday. - id206822744, yadirachavez2002

Question

Mathematics: Monica reads 20 pages from her new book on Saturday. She reads 36 pages on Sunday and the remaining 60 pages on Monday. What percentage of the book did she read on Sunday? Round to nearest whole number.

yadirachavez2002 · Accepted Answer

The ball will hit the ground 4 seconds after being thrown.

Step-by-step explanation:

By definition, the ball hits the grounds when the height is zero.

Then, knowing that the Quadratic function that models that situation is:

h(x)=-2x^2+4x+16

You can make it equal to zero:

0=-2x^2+4x+16

Now you can use the Quadratic formula:

$x=\frac{-b\±\sqrt{b^2-4ac} }{2a}$

In this case you can identify that:

$a=-2\\b=4\\c=16$

Therefore, knowing these values, you can substitute them into the Quadratic formula and then evaluate, in order to find the solution:

$x=\frac{-4\±\sqrt{4^2-4(-2)(16)} }{2(-2)}\\\\x_1=4\\x_2=-2$

Choose the positive solution.

Then, the ball will hit the ground 4 seconds after being thrown.

Monica reads 20 pages from her new book on Saturday. She reads
36 pages on Sunday and the remaining
60 pages on Monday. What percentage of the book did she read on Sunday? Round to nearest whole number.

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