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3 years ago

For less than twice a number K

Mathematics

2 answers:

wariber [46]3 years ago

6 0

Answer:

K>x>2

Step-by-step explanation:

X is a number of unknown

andriy [413]3 years ago

4 0

Answer:

Step-by-step explanation:

kk cuz I say so ok cool nice

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The vertex of the parabola below is at the point (1.-3). Which of the equations below could be the one for this parabola?

Ilia_Sergeevich [38]

Answer: Choice D. y = (x-1)^2 - 3

The vertex is (h,k) = (1,-3). So h = 1 and k = -3.

We have a = 1 as the leading coefficient.

Plug those values into the equation below

y = a(x-h)^2 + k

y = 1(x - 1)^2 + (-3)

y = (x - 1)^2 - 3

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3 years ago

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There is a jar of jellybeans on Principal Cooper's desk. 40% of the jellybeans are red. There are 28 red jellybeans. How many je

AnnyKZ [126]

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3 years ago

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Please help solve this. 10points worth it

Sever21 [200]

Answer:

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Step-by-step explanation:

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3 years ago

Add or subtract. Express in simplest form.<br> -4 1/3 +1 1/6

ratelena [41]

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3 years ago

Given the set of vertices, determine whether parallelogram ABCD is a rhombus, rectangle or square. List all that apply. A(7,-4),

Sloan [31]

Given:

Vertices of a parallelogram ABCD are A(7,-4), B(-1,-4), C(-1,-12), D(7, -12).

To find:

Whether the parallelogram ABCD is a rhombus, rectangle or square.

Solution:

Distance formula:

$D=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

Using distance formula, we get

$AB=\sqrt{(-4-(-4))^2+(-1-7)^2}$

$AB=\sqrt{(-4+4)^2+(-8)^2}$

$AB=\sqrt{0+64}$

$AB=8$

Similarly,

$BC=\sqrt{(-1-(-1))^2+(12-(-4))^2}=8$

$CD=\sqrt{(7-(-1))^2+(-12-(-12))^2}=8$

$AD=\sqrt{(7-7)^2+(-12-(-4))^2}=8$

All sides of parallelogram are equal.

$AC=\sqrt{(-1-7)^2+(-12-(-4))^2}=8\sqrt{2}$

$BD=\sqrt{(7-(-1))^2+(-12-(-4))^2}=8\sqrt{2}$

Both diagonals are equal.

Since, all sides are equal and both diagonals are equal, therefore, the parallelogram ABCD is a square.

We know that, a square is special case of rectangles and rhombus.

So, parallelogram ABCD is a rhombus, rectangle or square. Therefore, the correct option is c.

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3 years ago