MATHEMATICS HIGH SCHOOL

Jean needs to graph the function below y= 7x^2 + 8x - 6
How many time should the graph of this function intersect at the x-axis?

A. 3
B. 2
C. 1
D. 0

Answers

Answer 1
Answer: Hello,

Δ=8²-4*7*(-6)=232>0 thus 2 roots
Answer B

Related Questions

Solve with quadratic formula 8x^2-9x-5=0
Is the following situation represented by a positive integer, a negative integer, or zero?The stock market closed with the same number of points as it opened with.NegativePositiveZeroHELP!!!PlS!!I NEED IT NOW!!!
Please help ASAP 25 pts
Ashley is a member of the Movie-a-Month Club, where she rents movies each month. She uses the table below to keep track of the number of movies she rents and the total cost, which includes her monthly membership fee. Number of Movies vs. Total Cost Number of Movies 12 15 9 22 Total Cost $35.00 $42.50 $27.50 $60.00 Ashley graphed the relationship in the table. What is the slope of the graph, and what does it represent? The slope of the graph is 2.50, and it represents the cost of each movie. The slope of the graph is 2.50, and it represents the amount of the membership fee. The slope of the graph is 5, and it represents the cost of each movie. The slope of the graph is 5, and it represents the cost of the membership fee. im not sure how to format it but its suppose to be a table.
A bookstore manager marks down the price if older hardcover books, which originally sell for b dollars, by 46%a. Write the mark down as a decimal b. Write two expressions for the sale price of the hardcover book c. What is the price of a hardcover book for which the original retail price was $29.00 d. If you buy the book in part c how much do you save by paying the sale price?

What is the value of s in the equation 3r=10+5s

Answers

3r=10+5s 
3*10=10+5s
30=10+5s
30-10=5s
20=5s
s=4
r=10

Which function describes the graph in the picture? NEED HELP ASAP

Answers


-- The function is a sine or cosine that wiggles from 3 below to 3 above its average value.  So the amplitude is 3 .  That lets out the 1st and 3rd choices.
It has to be the 2nd or 4th choice.

Looking at the graph, the y-intercept is at  y=6.
The y-intercept is the point where x=0,  so f(0)=6.

Test the 2nd choice:    f(x)  =  3 cos(x)  +  3

                                 f(0)  =  3 cos(0)  +  3

cos(0) = 1   so           f(0)  =  3 (1)       +  3          = 6

Choice-2 is looking good. 
Just to be sure, let's check choice-4:

                                 f(x)  =  3 sin(x)  +  3

                                 f(0)  =  3 sin(0)  +  3

sin(0) = 0       so        f(0)  =  3 (0)       +  3      = 3

Beautiful !  Choice-4 flopped.  The answer is choice-2 .

Answer: b

Step-by-step explanation:

Compute the requested average.Tim Worker wants to purchase an automobile warranty costing $856. If he chooses to make 12 equal payments, then in dollars and cents the average payment will be?

A. 14.02
B. 71.33
C. 71.34
D. 140.19

Answers

The average payment will be $856/12 = $71.33

10x f ( 7 ) + 9 x g(-1) =

Answers

The value of the expression is 3439 in the given case of 10x f ( 7 ) + 9 x g(-1)

To solve the expression  10x * f(7) + 9 * g(-1), we need to know the specific functions f(x) and g(x) and their corresponding values at x = 7 and x = -1. Once we have this information, we can substitute the values and then perform the calculations to find the result.

For example, if the functions are defined as follows:

f(x) = x^2\ng(x) = 2x + 3

Then, we can evaluate the expression as follows:

f(7) = 7^2 = 49\n\ng(-1) = 2(-1) + 3 = 1

Now, substitute the values back into the expression:

10x * f(7) + 9 * g(-1) = 10 * 7 * 49 + 9 * 1 = 10 * 343 + 9 = 3430 + 9 = 3439

So, the value of the expression is 3439.

To know more about  expression   here

brainly.com/question/1859113

#SPJ3

Solve the given expression-

10x f ( 7 ) + 9 x g(-1)

Answer:

what are you trying to look for the variables or answer?

Step-by-step explanation:

Gavin and Ethan are training for a race. Last week, Gavin ran 7 kilometers, and Ethan ran twice as far as Gavin. What is the total distance that Gavin and Ethan ran last week? Express your answer in meters.

Answers

The total distance that Gavin and Ethan ran last week is: 21000 meters

How to find the total distance?

Gavin ran 7 kilometers last week, and Ethan ran twice as far as Gavin. To find the total distance that Gavin and Ethan ran last week, we need to add the distance that Gavin ran to the distance that Ethan ran.

Since Gavin ran 7 kilometers, we can convert this to meters by multiplying by 1000:

7 kilometers * 1000 meters/kilometer = 7000 meters

Since Ethan ran twice as far as Gavin, we can find the distance that Ethan ran by multiplying Gavin's distance by 2:

2 * 7000 meters = 14000 meters

Therefore, the total distance that Gavin and Ethan ran last week is:

7000 meters + 14000 meters = 21000 meters

In summary, Gavin ran 7000 meters and Ethan ran 14000 meters last week, for a total distance of 21000 meters that they both ran.

Read more about Total Distance at: brainly.com/question/4931057

#SPJ3

If Ethan ran twice as far as Gavin then he ran 14 kilometers. 7*2=14. And then you add 7 to 14 which gives you 21. so they ran a total of 21 kilometers

Given this equation, what is the largest possible value for z?

Answers

Hello,
z=-2x²+15x-3y²+21y-6
=-2(x²-2*15/2*x+(15/2)²) -3(y²-2*7/2y+(7/2)²)-6+2*225/4+3*49/4
=-2(x-15/2)²-3(y-7/2)²+573/4

The max is for x-15/2=0 and y-7/2=0 thus 537/4
Other Questions
A rectangular prism is 3 meters long, 4 meters wide, and has a total surface area of 94 square meters. What is its height?
"At Truman Middle School, 2/3 of the girls surveyed preferred playing capture the flag at gym. If 600 girls responded to the survey, how many preferred playing something else?"
5/12 expressed as a decimal fraction is? (Round to the nearest thousandths)
The height of a box is 7 inches. Its length is 6 inches more than its width. Find the length if the volume is 280cubic inches.