All categories

2 years ago

Which values of c will cause the quadratic equation –x2 + 3x + c = 0 to have no real number solutions? Check all that apply.

2 answers:

4 0

A quadratic equation has no real number solutions than the discriminant is less than zero

D < 0

(b^2 -4ac) < 0

(9 -4(-1*c) < 0

(9+4c) < 0

4c < -9

c < -9/4

hope this will help you

Sophie [7]2 years ago

4 0

Which values of c will cause the quadratic equation –x2 + 3x + c = 0 to have no real number solutions? Check all that apply.

–5,-9/2

You might be interested in

Which statement is true regarding the graphed functions?

anyanavicka [17]

Answer:

the last option: $f(-2)=g(-2)$

Step-by-step explanation:

Make sure you have the numerical answer for each of the functional expressions that are shown among the possible solution choices:

f(4) = -14 (what the blue function reads [its y-value] when x is 4)

g(4) = 10 (what the red function reads [its y-value] for x=4)

g(-2) = 4 (y-value of the red function when x is -2)

f(2) = -8 (y-value of the blue function for x = 2)

f(-2) = 4 (y-value of the blue function for x =-2)

use them to compare the options they give you, and the only one that matches is the last option.

3 0

2 years ago

A truck rental company charges $50 plus $10 per hour. Identify a function that represents the total charge for renting a truck f

Reil [10]

Answer:

c(h) = 50 +10h

c(4) = 90 . . . . . it costs $90 to rent the truck for 4 hours

Step-by-step explanation:

The problem statement tells you the total charge is the sum of $50 and a charge of $10 per hour. That is, for h hours, the total charge is ...

c = 50 + 10h

In functional form, this is ...

c(h) = 50 +10h . . . . . . total charger for a rental of h hours

The function value with an input of 4 is ...

c(4) = 50 +10·4

c(4) = 90

Since the input is the number of hours of rental, and the function value is the total charge, this represents the total charge for a rental of 4 hours.

4 0

2 years ago

In one month, Claudia rides her favorite bike trail 12 times. She travels a total distance of 1,182 km. What is the length of Cl

Svetlanka [38]

98 $98 \frac{1}{2}$

7 0

2 years ago

Find the dimensions of the rectangle with area 289 square inches that has minimum perimeter, and then find the minimum perimeter

nalin [4]

<span>To minimize the perimeter you should always have a square.
sqrt(289) = 17
The dimensions should be 17 X 17

To see , try starting at length 1, and gradually increase the length.
The height decreases at a faster rate than the length increases, up until you reach a square.

Or if you want to use algebra, Say the width is 17-x
Then the length is 289/(17-x)

Now, this is bigger than 17+x, as shown here:
289/(17-x) > 17+x
289 > 289 - x^2
which is true.
so the perimeter would be bigger than 2 * (17- x + 17 + x) = 2 * (2 * 17) = 4 * 17

Again, the dimensions should be a square. 17 X 17.</span>

4 0

2 years ago

The table below shows the ages of houses to the nearest year in a neighborhood. Using the age of the houses as the random variab

Zielflug [23.3K]

Answer:

The probability distribution of X is given by,

P(X = x) $\simeq$ 0.17 when x = 1

$\simeq$ 0.22 when x = 2

$\simeq$ 0.28 when x = 3

$\simeq$ 0.33 when x = 4

= 0 otherwise

Step-by-step explanation:

According to the question, X is the random variable denoting age of a house to the nearest year in a neighborhood.

From the given data we can construct the following table -

Age of house(X) Frequency Relative frequency

(Almost equal to)

1 15 0.17

2 20 0.22

3 25 0.28

4 30 0.33

So, the probability distribution of X is given by,

P(X = x) $\simeq$ 0.17 when x = 1

$\simeq$ 0.22 when x = 2

$\simeq$ 0.28 when x = 3

$\simeq$ 0.33 when x = 4

= 0 otherwise

8 0

2 years ago

Read 2 more answers