3 years ago

What is the difference between 9 - 4 1/5

Mathematics

1 answer:

erica [24]3 years ago

3 0

Hey there!☺

$Answer:\boxed{4\frac{4}{5}}$

$Explanation:$

$9-4\frac{1}{5}$

Subtract the whole number by the fraction.

$\frac{24}{5}$

24/5 needs to be simplified so we will rewrite it like this:

$4\frac{4}{5}$

Hope this helps!

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Pablo and max's follows a flight pattern approximatley modled by the equation h(t)=-8t^2+16t+2 where h(t)is their rocket's heigh

kodGreya [7K]

Answer: 2.11 s

Step-by-step explanation:

Given

Equation of rockets height is given by

$\Rightarrow h(t)=-8t^2+16+2$

Height will be zero once the rocket lands on the ground

So, we can write

$\Rightarrow h(t)=0\ \text{or}\ -8t^2+16t+2=0\\\Rightarrow 8t^2-16t-2=0\\\\\Rightarrow t=\dfrac{16\pm \sqrt{(-16)^2-4(8)(-2)}}{2\times 8}\\\\\Rightarrow t=\dfrac{16\pm \sqrt{320}}{16}\\\\\text{Neglecting negative value of t}\\\\\Rightarrow t=\dfrac{16+17.888}{16}=2.11\ s$