4 years ago

How can u find the sign of the product of two or more rational numbers

1 answer:

4 0

If it is two negatives its a positive, if its a negative and one positive it will be negative. but if its two positive its positive
(-)+(-)=(+)
(-)+(+)=(-)
(+)+(+)=(+)

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A ball is dropped from a height of 30 feet and each time it hits the ground it bounces 0.75 of the previous height. What is the

dimulka [17.4K]

30 x 0.75 = 22.5 .............(1st)

22.5 x 0.75 = 16.875 ......(2nd)

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3 years ago

Does anyone know this ?

vodomira [7]

Answer:

Always

Step-by-step explanation:

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Paha777 [63]

Answer:

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3 years ago

What is the nature of the roots of the quadratic equationsbif the value of its discriminant is 0

scoray [572]

If the discriminant is 0, then you'll have exactly one root. This is a double root since the root repeats itself.

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3 years ago

Please help

katrin2010 [14]

$\dfrac{n^2+3n+2}{n^2+6n+8}-\dfrac{2n}{n+4}\\\\=\dfrac{n^2+2n+n+2}{n^2+4n+2n+8}-\dfrac{2n}{n+4}\\\\=\dfrac{n(n+2)+1(n+2)}{n(n+4)+2(n+4)}-\dfrac{2n}{n+4}\\\\=\dfrac{(n+2)(n+1)}{(n+2)(n+4)}-\dfrac{2n}{n+4}\\\\=\dfrac{n+1}{n+4}-\dfrac{2n}{n+4}=\dfrac{n+1-2n}{n+4}=\dfrac{1-n}{n+4}$

$Answer:\ \boxed{B.\ \dfrac{1-n}{n+4}}$

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3 years ago