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3 years ago

Please anybody help with this question :)

Mathematics

1 answer:

DedPeter [7]3 years ago

6 0

Answer:

87.35%

Explanation:

If the total is 1,032,471, it equals 100%

African Americans are in 901,896

1,032,471=100

901,896 = X

Cross multiply

1,032,471x=90,189,600

Divide

x= 87.35%

Hope you get it!

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prohojiy [21]

The sketch of the parabola is attached below

We have the focus $(a,b) = (2, -0.5)$
The point $P(x,y)$
The directrix, c at $y=-1.5$

The steps to find the equation of the parabola are as follows

Step 1
Find the distance between the focus and the point P using Pythagoras. We have two coordinates; $(2, -0.5)$ and $(x,y)$ .
We need the vertical and horizontal distances to find the hypotenuse (the diagram is shown in the second diagram).
The distance between the focus and point P is given by
$\sqrt{ (x-a)^{2}+ (y-b)^{2} }$

Step 2
Find the distance between the point P to the directrix $c$ . It is a vertical distance between y and c, expressed as $y-c$

Step 3
The equation of parabola is then given as
$\sqrt{ (x-a)^{2}+ (y-b)^{2} }$ = $y-c$
$(x-a)^{2}+ (y-b)^{2}= (y-c)^{2}$ ⇒ substituting a, b and c
$(x-2)^{2}+ (y--0.5)^{2} = (y--1.5)^{2}$
$(x-2)^{2}+ (y+0.5)^{2}= (y+1.5)^{2}$ ⇒Rearranging and making $y$ the subject gives

$y= \frac{ x^{2} }{2} -2x+1$

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3 years ago

What’s a coefficient

My name is Ann [436]

Answer:

The number before a variable. For example, 4x. 4 would be the coefficient, and x would be the variable.

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3 years ago

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Divided 2) Ellie made $253 for 22 hours of work. She makes $11 per hour so Identify the error:

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Answer:

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<span>v ⃗ lies in Quadrant II, means Vx is less than 0 (negative)
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