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3 years ago

15

To factor 9x^2-16 you can first rewrite the expression as:

1 answer:

natka813 [3]3 years ago

4 0

I hope this helps you

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Find the general form, Ax2+Ay2+Dx+Ey+F=0, by identifying the coefficients A,D,E,&F center:(0,1); r=1 (x-0)2+(y-1)2=1 x2+y2-2

siniylev [52]

Answer:

The value of A is 1, D is 0, E is -2 and F is 0.

Step-by-step explanation:

The given equation is

$Ax^2+Ay^2+Dx+Ey+F=0$ ...(1)

The standard form of the circle is

$(x-h)^2+(y-k)^2=r^2$

Where, (h,k) is the center of the circle and r is the radius.

$(x-0)^2+(y-1)^2=1$

$x^2+y^2-2y+1-1=0$

$x^2+y^2-2y=0$

It can be written as

$x^2+y^2+0x-2y+0=0$ ....(2)

On comparing (1) and (2) we get.

$A=1$

$D=0$

$E=-2$

$F=0$

Therefore the value of A is 1, D is 0, E is -2 and F is 0.

6 0

3 years ago

Read 2 more answers

At the North campus of a performing arts school 30% of students are music majors at the South campus 80% of the students are mus

OLEGan [10]

Answer:

It should be option B

Step-by-step explanation:

4 0

3 years ago

Which numbers are rational numbers that are not integers?<br><br> 0,4,-2,2/3,-1.8,16,3.2,-5/4

Anna [14]

Answer:

-1.8, -5/4, 3.2, 2/3

Step-by-step explanation:

5 0

3 years ago

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The sqaure root of 1/5 of a number is 5. find the number

Mamont248 [21]

Answer:

25

Step-by-step explanation:

The number that we are trying to discover was divided by 5, which gave you the number of 5. To find the original number multiply 5 by 5. I hope this helps.

5 0

3 years ago

Write the standard form of the equation of the line through the given point with the given slope. Through (-2,5), slope =-4

AleksandrR [38]

Answer:

$\huge\boxed{4x+y=-3}$

Step-by-step explanation:

The point-slope form of an equation of a line:

$y-y_1=m(x-x_1)$

<em>(x₁, y₁)</em><em> - point on a line</em>

<em>m</em><em> - slope</em>

<em />

We have

$m=-4,\ (-2,\ 5)\to x_1=-2,\ y_1=5$

Substitute:

$y-5=-4(x-(-2))\\\\y-5=-4(x+2)$

Convert to the standard form

$Ax+By=C$

$y-5=-4(x+2)$ <em> use the distributive property</em>

$y-5=(-4)(x)+(-4)(2)$

$y-5=-4x-8$ <em>add 5 to both sides</em>

$y-5+5=-4x-8+5$

$y=-4x-3$ <em>add 4x to both sides</em>

$4x+y=-4x+4x-3\\\\4x+y=-3$

3 0

3 years ago