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xenn [34]
3 years ago
12

Students taking an online english test are randomly assigned 3 questions out of a set of 9 different questions. How many differe

nt sets of questions (i.e. tests) are possible for the students?
Mathematics
1 answer:
wolverine [178]3 years ago
4 0

Answer:

2 sets I think

Step-by-step explanation:

what are the answer choices

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Someone help please
coldgirl [10]

Answer:

The vertex or top is ( 2, -9)

Step-by-step explanation:

Given y = (x - 5 ) * ( x + 1 )

x² - 4x - 5

See attachment.

The vertex of the parabola is the Top.

The vertex of a parabola is the point where the parabola crosses its axis of symmetry.

If the coefficient of the x² term is positive, the vertex will be the lowest point on the graph, the point at the bottom of the “ U ”-shape. If the coefficient of the x² term is negative, the vertex will be the highest point on the graph, the point at the top of the “ U ”-shape.

The standard equation of a parabola is it

y = ax² + bx + c.

But the equation for a parabola can also be written in "vertex form": y = a(x−h)² + k

In this equation, the vertex of the parabola is the point (h,k) = (2, -9)

3 0
3 years ago
CAN SOMEONE PLEASEEEE HELP MEEE <br> (please graph it for me) &lt;33
KengaRu [80]

We are given coordinates of the triangle: A(2,2), B(7,1) and C(8,-4).

We need to rotated 90° counterclockwise about the origin.

In order to find the new coordinates of rotatation 90°counterclockwise about the origin, we can apply rule (h, k) ---> (-k,h).

Where (h,k) are the coordinates of original image on axes and (-k,h) are the coordinates of rotated image.

In resulting coordinates of the image first swap the x and y coordinates of the original image and then make the sign opposite of each x-coordinate.

On applying rule (h, k) ---> (-k,h), we get

A(2,2) --> A'(-2,2)

B(7,1) --> B'(-1,7)

C(8,-4) --> C'(4,8)

5 0
3 years ago
What is the answer of square root of -24 in complex numbers
Sergio039 [100]

With \sqrt{-1}=i, we have

\sqrt{-24}=\sqrt{(-1)(24)}=\sqrt{-1}\sqrt{24}=i\sqrt{24}

Since 24=2^3\cdot3, we can further write this as

i\sqrt{24}=i\sqrt{2^2\cdot6}=2i\sqrt6

3 0
3 years ago
What is the definition of a parent function?
Mice21 [21]

Answer:

Simón arre que si cuando quieras

8 0
3 years ago
3/5 of a number is 60. what is 45% of the number
lisabon 2012 [21]
The present of 45 Is 45.0 present
4 0
3 years ago
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