Karim read 56 pages in 2 hours.

Mathematics

1 answer:

Whitepunk [10]3 years ago

6 0

He read 28 pages in 1 hour so in two hours it would be 56 but per hour it is 28 more pages

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3 years ago

C. 48 + 8x + 23 = 7<br> Solve for x

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ANSWER BELOW

Combine like terms

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3 years ago

What is the zero in the quadratic function f(x)= 9x^2-54x-19?

Alex17521 [72]

Answer:

6.33... and 0.333...

Step-by-step explanation:

The quadratic formula is

$x=\frac{-b+\sqrt{b^2-4ac} }{2a}$ .

It is important because while some quadratics are factorable and can be solved not all are. The formula will solve all quadratic equations and can also give both real and imaginary solutions. Using the formula will require less work than finding the factors if factorable. We will substitute a=9, b=-54 and c=-19.

$x=\frac{-b+/-\sqrt{b^2-4ac} }{2a}\\x=\frac{-(-54)+/-\sqrt{(-54)^2-4(9)(-19)} }{2(9)}\\x=\frac{54+/-\sqrt{2916+684} }{18}$