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dezoksy [38]
3 years ago
9

Which statement about the following equation is true? 2x2 – 9x + 2 = –1

Mathematics
1 answer:
forsale [732]3 years ago
3 0

Answer:

The discriminant is greater than 0, so there are two real roots.

Step-by-step explanation:

Had the same Q.

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Which of the following is the graph of y = sin(0.5x)?
Alexeev081 [22]
You did not include the graphs, but I can explain how the graph is and so you can recognize it.


1) for x = 0, y = sin(0) = 0, so the  origin (0,0) is part of the graph.


2) The range of the function is the interval [-1, 1]. This is, y is from -1 to 1, and the graph oscilates (is a wave) between those minimum and maximum.


3) The periodicity, P, of the function is such that 0.5P = 2π = > P = 4π


That means that the values repeat every 4π interval (which is the same that 720°)


4) The zeroes of the function are 2π * n, where n is any whole number (negative, zero or positive).


That means that the function crosses the x-axis at

..., -6π, -4π, 2π, 0, 2π, 4π , 6π, ...


5) It is an odd function (which means that f(x) = sin(0.5x) = - f(-x) = - sin(-0.5x).


Now you have plenty information to identify the graph.

I also include a graph of the function in the attached pdf file.
Download pdf
5 0
3 years ago
Read 2 more answers
(15 + 9) + 13 = 15+ (9 + 13)
egoroff_w [7]

Answer:

64 <em> </em><em>te</em><em> </em><em>quiero</em><em> </em><em>mucho</em><em> </em><em>ygrfrf7rttffrtx</em>

3 0
3 years ago
What is the measure of angle DFG​
kompoz [17]

Answer:

26

Step-by-step explanation:

24+130=154

180-154=26

Answer is 26

6 0
3 years ago
Which explains whether or not a parallelogram can be classified as a rectangle? A parallelogram is also a rectangle. Both quadri
arsen [322]

Answer:

A parallelogram is not a rectangle. A rectangle must have four right angles, and a parallelogram must only have opposite angles congruent.

Step-by-step explanation:

4 0
3 years ago
Which equation accurately represents this statement? Select three options. Negative 3 less than 4. 9 times a number, x, is the s
Scilla [17]

The correct statements about the equation are b, c, and e.

\rm 4.9x-(-3)=12.8\\\\ 3+4.9x=12.8\\\\12.8=4.9x+3

<h3>Polynomial;</h3>

The highest power of the polynomial is called the degree of the polynomial.

We have to determine

Which equation accurately represents this statement?

Statement; Negative 3 less than 4.9 times a number, x, is the same as 12.8.

Then,

The equation accurately represents this statement is;

\rm 4.9x-(-3)=12.8\\\\4.9x+3=12.8\\\\4.9x=12.8-3\\\\4.9x=9.8\\\\x=\dfrac{9.8}{4.9}\\\\x=2

Hence, the correct statements about the equation are b, c, and e.

To know more about polynomial click the link is given below.

brainly.com/question/17822016

5 0
2 years ago
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