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Jet001 [13]
1 year ago
11

Find the condition of the expression:√3-2x-x^2

Mathematics
1 answer:
Alex73 [517]1 year ago
7 0

Answer:

-1 <= x <= 1

Step-by-step explanation:

√((1-2x+x^2)+2-2x^2)

= √((1-x)^2 + 2*(1-x)(1+x) )

điều kiện là 1 - x > =0 và 1+x >=0

giải 2 bất phương trình trên ta thu đc kết ququả

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Find the value of x using segment addition.
kolbaska11 [484]
You combine both 2x-12 and x+2 and 11 which makes the equation

2x-12+x+2= 11

The you get your answer which is

X=7

3 0
3 years ago
If f(x)=x+7 and g(x)=2x-3 what is (f-g)(x)
aalyn [17]

Answer:

-x + 10

Step-by-step explanation:

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

x + 7 - 2x - 3

x - 2x

-x + 7 + 3

-x + 10

4 0
2 years ago
What is the equation of the parabola in vertex form with vertex (2,-4) and directrix y=-6​
Pachacha [2.7K]

Answer:

y=\dfrac{1}{8}(x-2)^2-4

Step-by-step explanation:

The directrix y=-6 is parallel to the x axes, so parabola has equation of the form

(x-x_0)^2=2px(y-y_0),

where (x_0,y_0) is the vertex of parabola and p is parabola's parameter.

By the definition, \frac{p}{2} is the distance from the vertex to the directrix, so

\dfrac{p}{2}=2\Rightarrow p=4

Hence, the equation of parabola is

(x-2)^2=8(y+4)

See attached diagram for the graph of parabola and its directrix.

In vertex form this equation is

y=\dfrac{1}{8}(x-2)^2-4

8 0
3 years ago
Find the distance x rounded to<br> the nearest tenth.
anyanavicka [17]

Answer:

x=0.1 ~ft

Step-by-step explanation:

cot30=\frac{B}{H} =\frac{B}{H}

\frac{\sqrt{3} }{2} =\frac{B}{H}=H=\frac{16}{\sqrt{3} }

sin70=\frac{X}{H} =\frac{P}{H}

sin70=\frac{x}{\frac{16}{\sqrt{3} } }

x=\frac{\sqrt{3} }{16 ~sin70}

=0.1152

x=0.1

<u>----------------------</u>

hope it helps

have a great day!!

6 0
2 years ago
Kitty has 13 papers .She had drawn 5 pictures. Then Her Little Brother Ripped 5 more. How may paper does Kitty have left. Show y
podryga [215]
13-5=8
8-5=3
so the answer would be:
3

Hope this helps
5 0
2 years ago
Read 2 more answers
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