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BlackZzzverrR [31]
1 year ago
9

Solve by completing the square

Mathematics
1 answer:
xz_007 [3.2K]1 year ago
7 0

Step-by-step explanation:

{x}^{2}  + 2x - 2 = 0

Now Adding three on both sides we get

{x}^{2}  + 2x - 2 + 3 = 0 + 3

{x}^{2}  + 2x + 1 = 3

{(x + 1)}^{2}   = 3

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WILL GIVE BRANLIEST! pls help thank u sm!! :-) u are all amazing
Andrews [41]

Answer:

C

Step-by-step explanation:

Given

3(x+9)^{\frac{3}{4} } = 24 ( divide both sides by 3 )

(x+9)^{\frac{3}{4} } = 8

Raise both sides to the power of \frac{4}{3}

x + 9 = 8^{\frac{4}{3} } = (\sqrt[3]{8}) ^{4} = 2^{4} = 16 ( subtract 9 from both sides )

x = 7 → C

5 0
3 years ago
Graph the ellipse with equation x squared divided by nine plus y squared divided by sixteen = 1
gladu [14]
X²/9 + y²/16 = 1

The general for mula of an ellipse is:

(x-h)²/a²  + (y-k)²/b² = 1. Since h = k = 0, this ellipse
x²/9 + y²/16 = 1
passes by the center O. (Note that a = 3 and b = 4)

Moreover sin b>a  so the majore axis is (on the y-axis) and a the minor axis (on the x-axis) [Its shape is as a vertical egg].

On a system of perpendicular axis that intercept in O., take on the x-axis 2 points A & B with respective coordinate A(3.0) and B(-3,0)
On the y-axis your report A'(0,+4) and B'(0,-4). So you have the vertex of the ellipse, then it's easy to draw it

6 0
3 years ago
Read 2 more answers
Help<br> -9x + 3.0 &gt; 6.6<br> Group of answer choices<br><br> x 0.4<br><br> x 2.4
Y_Kistochka [10]

Answer:

x  0.4

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

3 0
3 years ago
The prefix dodeca-means what? Check all that apply.<br><br> A-8<br> B-6<br> C-20<br> D-12
Firdavs [7]

Answer:

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3 0
3 years ago
Read 2 more answers
Find the unknown sides of the triangle
DedPeter [7]

Answer:

the unknown side of the triangle is 2\sqrt{21}

Step-by-step explanation:

a^2+b^2=c^2

4^2+b^2=10^2

16+b^2=100

b^2=100-16

b^2=84

b=\sqrt{84} or 2\sqrt{21}

7 0
2 years ago
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