3 years ago

What is the decimal equivalent of 9 20 ?

Mathematics

2 answers:

Brut [27]3 years ago

8 0

Answer:

0.45 and 45/100 or 45%

Step-by-step explanation:

0.45 is a decimal and 45/100 or 45% is the percentage for 9/20.

Lena [83]3 years ago

5 0

Answer:

im assuming u mean 9/20 which is .45

Step-by-step explanation:

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A planet follows an elliptical path described by 16 x squared + 4 y squared = 64. A comet follows the parabolic path y equals x

saul85 [17]

Answer:

The comet might intersect the orbiting planet at (0, -4), $(\pm\frac{\sqrt{31}}{2},\frac{15}{4})$ .

Step-by-step explanation:

Given that, a planet follows an elliptical path described by

$16x^2+4y^2=64$ .........(1)

A comet follows the parabolic path

$y=x^2-4$

$x^2=y+4$ .........(2)

To find the intersecting point, we need to solve the above equations.

Putting $x^2=y+4$ in the equation (1)

$y+4+4y^2=64$

$\Rightarrow 4y^2+y+4-64=0$

$\Rightarrow 4y^2+y-60=0$

$\Rightarrow 4y^2+16y-15y-60=0$

$\Rightarrow 4y(y+4)-15(y+4)=0$

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When y = -4 , then $x^2=-4+4$ $\Rightarrow x=0$

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The comet might intersect the orbiting planet at (0, -4), $(\pm\frac{\sqrt{31}}{2},\frac{15}{4})$ .

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3 years ago