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tresset_1 [31]
3 years ago
8

How would you solve x^2 -4x +2=0?!

Mathematics
2 answers:
Nataly_w [17]3 years ago
7 0

Answer:

i completed the square and found x

Step-by-step explanation:

x = ±√2+2

x= 2 + √2, 2 - √2

aleksandrvk [35]3 years ago
4 0

Answer:

non liner

Step-by-step explanation:

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Which representation of a transformation on a coordinate grid does not preserve congruence?
Alex17521 [72]

Answer:

B

Step-by-step explanation:

Consider all options:

A. Transformation with the rule

(x,y)\rightarrow (x,-y)

is a reflection across the x-axis.

Reflection across the x-axis preserves the congruence.

B. Transformation with the rule

(x,y)\rightarrow \left(\dfrac{7}{8}x,\dfrac{7}{8}y\right)

is a dilation with a scale factor of \frac{7}{8} over the origin.

Dilation does not preserve the congruence as you get smaller figure.

C. Transformation with the rule

(x,y)\rightarrow (x+6,y-4)

is a translation 6 units to the right and 4 units down.

Translation 6 units to the right and 4 units down preserves the congruence.

D. Transformation with the rule

(x,y)\rightarrow (y,-x)

is a clockwise rotation by 90^{\circ} angle over the origin.

Clockwise rotation by 90^{\circ} angle over the origin preserves the congruence.

3 0
3 years ago
Plz help <br> What does “|” mean in mathematical term <br> Thanks
vova2212 [387]

Answer:

Step-by-step explanation:

If you meant " | ", as in |x|, that's "absolute value."  The domain of this function is "all real numbers," and the range is "all real numbers zero or greater."

8 0
3 years ago
For the function f(x)=x^2, what effect will multiplying f(x) by 1/2 have on the graph?
erma4kov [3.2K]
For the function f ( x ) = x² we have the new function f 1 ( x ) = 1/2 x².
f ( x ) = a · x²
- If |a| < 1   the graph is compressed vertically by a factor of a.
- If |a| > 1  the graph is stretched vertically by a factor of a.
Here:  a = 1/2 < 1
Answer:
C. The graph will be compressed vertically.
5 0
3 years ago
Carpet, padding, and installation costs $23.23 per sq. yd. how much would it cost to carpet both bedrooms.
MAVERICK [17]
$46.46 for both rooms to have carpet
4 0
3 years ago
What is the geometric mean between 7 and 12
Tresset [83]

Answer:

Geometric Mean = 9.17

Step-by-step explanation:

Here,

a = 7

b = 12

Geometric mean = root(ab)

= root( 7 x 12)

= root(84)

= 9.17

6 0
2 years ago
Read 2 more answers
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