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Tanzania [10]
3 years ago
5

Given a quadratic function, f(x) = ax2 + bx + c has a positive leading coefficient and the vertex that has a positive y-coordina

te. Determine the number of real zeros of the function
A. 2 real zeros

B. 1 real zero

C. 1 real zero and 1 imaginary zero

D. 2 imaginary zeros
Mathematics
2 answers:
marysya [2.9K]3 years ago
8 0
The correct answer is A. 2 real zeros.
Komok [63]3 years ago
6 0
As it has a positive leading coefficient the parabola will open upwards.

Also, as the y coordinate of the vertex is positive then the graph will not intersect the x axis at any point(s) ,  so there  can be no real zeroes.

D is the correct choice
You might be interested in
Dan makes a pineapple sorbet. He uses 3 lemons. Work out how many people he makes pineapple sorbet for.
seropon [69]

Answer:

N/A

Step-by-step explanation:

There is not enough information to answer with a number.


6 0
3 years ago
Pow Research center is a nonpartisan polling organization that provides information about issues, attitudes, and trends shaping
Brilliant_brown [7]

Remember that the difference between census and a sample survey is that in a census you take all the people of population in consideration in the study, and in the sample survey you take a part of that population in consideration to survey.

SO here if you check the problem it says that "in a recent poll, Pew reserchers found that 47% OF AMERICAN ADULT RESPONDENTS"

that is the population of the study that you want to focus, but there are a billion of american adult in US right? so its impossible that this company Pow Research made a census if you consider that a billion of people in US is almost infinite number for a company with a finite number of employees.

Also remember that a company has a budget to consider every month or every year, so to make a census or a sample survey it takes time and money, just to survey 10 people in a streeth of US cost money so if you want to reduce cost you might need to do a sample survey instead of a census.

5 0
3 years ago
Choose the equation of the vertical line passing through the point 1,-1
natka813 [3]
A vertical line has the equation of x = a 

If the vertical line goes through a certain point, as in this case, then the y value is irrelevant. It can be anything. It is the x value that is the one you need to use. 

So the answer is x = 1. This equation has no slope that is defined.
5 0
3 years ago
Solve the following logarithmic equations.<br> log[(x^2 + 2x − 3)^4] = 0
saw5 [17]

Answer:

The solutions are x = 1.24 and x = -3.24

Step-by-step explanation:

Hi there!

First, let´s write the equation:

log[(x² + 2x -3)⁴] = 0

Apply the logarithm property: log(xᵃ) = a log(x)

4 log[(x² + 2x -3)⁴] = 0

Divide by 4 both sides

log(x² + 2x -3) = 0

if log(x² + 2x -3) = 0, then  x² + 2x -3 = 1 because only log 1 = 0

x² + 2x -3 = 1

Subtract 1 at both sides of the equation

x² + 2x -4 = 0

Using the quadratic formula let´s solve this quadratic equation:

a = 1

b = 2

c = -4

x = [-b± √(b² - 4ac)]/2a

x =  [-2 + √(4 - 4(-4)·1)]/2 = 1.24

and

x = [-2 - √(4 - 4(-4)·1)]/2 = -3.24

The solutions are x = 1.24 and x = -3.24

Have a nice day!

4 0
3 years ago
(Pls help) I need help finding x!
Ray Of Light [21]

Answer:

x ≈ 46°

Step-by-step explanation:

Since the triangle is right use the sine ratio to solve for x

sinx = \frac{opposite}{hypotenuse} = \frac{10}{14}, hence

x = sin^{-1} ( \frac{10}{14} ) ≈ 46°

8 0
3 years ago
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