3 years ago

I need help with this please help :)

Mathematics

2 answers:

Anestetic [448]3 years ago

8 0

Answer:

correct answer is right

Tanya [424]3 years ago

6 0

ANSWER : it is a right angle

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Write the equation of a circle given the center (-4, 4) and raduis r = 5.

Len [333]

Answer:

A) $(x+4)^2+(y-4)^2=25$

Step-by-step explanation:

The equation of a circle is $(x-h)^2+(y-k)^2=r^2$ where $(h,k)$ is the center and $r$ is the radius. If $(h,k)\rightarrow(-4,4)$ and $r=5$ , then:

$(x-h)^2+(y-k)^2=r^2\\\\(x-(-4))^2+(y-4)^2=5^2\\\\(x+4)^2+(y-4)^2=25$

Therefore, the equation of the circle is $(x+4)^2+(y-4)^2=25$

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3 years ago

If f(x) = 2х2 + 3 and g(x) = х2 -7, find (f- а)(x).

Lerok [7]

Answer:

C. x^2 -4

Step-by-step explanation:

What you do is subtract the functions as said by

(f-g)(x).

so:

f(x)-g(x)

(2x^2+3) - (x^2 -7)

2x^2 -x^2 +3 - 7= x^2 -4

7 0

3 years ago

I GIVE BRAINLILEST<br> //////////////////////////////////////

elena-s [515]

Answer:

answer is c makes sense because you just add 1.25 x 20

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3 years ago

Solve for Inequality

uysha [10]

Answer:

x > -1

Step-by-step explanation:

Divide the whole inequality by 9.

( $\frac{x}{3}$ +1)> $\frac{6}{9}$

Subtract 1.

$\frac{x}{3}$ > $\frac{2}{3}$ - 1

$\frac{x}{3}$ > - $\frac{1}{3}$

Multiply by 3.

x > -1

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4 years ago

Factor the expression by grouping <br> (show work/steps)<br><br> -4x^3 - 12x^2 + 8x + 24

lisabon 2012 [21]

Factor out -4
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Factor out x^2
-4(x^2(x+3)-2x-6)
Factor out -2
-4(x^2(x+3)-2(x+3))
Factor out x+3
-4(x+3)(x^2-2)

5 0

3 years ago