1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Nuetrik [128]
3 years ago
12

This is an ADDMATHS QUESTION so I'm not sure if anyone can help me but please try to ㅠ ㅠ: Find the equation of the normal to the

curve y=ln(2x^2 - 7) at the point where the curve crosses the positive x-axis. Give your answer in the form ax+by+c=0 , where a, b and c are integers.

Mathematics
2 answers:
vlabodo [156]3 years ago
8 0
This equation crosses the positive x-axis at (0, 2). I used a graphing calculator, you could brute force it if you'd like.

First, take the derivative of the equation given:
y = ln(2x^2-7)
y' = \frac{4x}{2x^2-7}

At 2, the function has a derivative of 8 (just plug in 2 to y'). So, the perpendicular to that has to have the slope -1/8 because of the negative-inverse rule. We have this until now:
y = -\frac{1}{8}x -2

Now, we have to get a 0 on the right side, so, just get everything on the other side, and you are done. 

zepelin [54]3 years ago
4 0
You can go through the effort of determining the zero of the function analytically and evaluating an analytic expression for the derivative at that point, or you can let a graphing calculator do that heavy lifting. Since the numbers have to be "nice" for your equation to have the desired form, it is easy to know what to round to in the event that is necessary (it isn't).

We find the positive zero-crossing at x=2, and the slope of the curve at that point to be 8. Thus the line will have slope -1/8 and can be written as
.. x +8y -2 = 0

You might be interested in
Omarie picked x amount of apples, took a break, and then picked v more. Write the expression that models the total number of app
meriva

Answer:

x+v

Step-by-step explanation:

i hope this halps =3

brainliest?

5 0
3 years ago
a grandmother says her grandson is two years older than her granddaughter and that together, they are at least 12 years old. how
vfiekz [6]

Hello There!

As for this problem, we would have to set up an equation in order to determine the missing age. We would do this because we want to find the missing age and by setting up an equation it will help find the age easier, as opposed to manually calculating it. With that said, let's begin to solve.

First, we would create an equation based on what the question says, which would look as:

x + x + 2 = 12

2x + 2 = 12

Subtract two from both sides.

2x = 10

The grand daughter is 5 years old and since the grandson is two years older he is 7.

Thus,

The age of the granddaughter is 5

The age of the grandson is 7


7 0
3 years ago
A package of tickets for 4 home games cost $180 . What proportion can you write to find what a 12 -game package cost if all indi
Amiraneli [1.4K]
You would write it like 4/180.
Then the other one would be
12/x.
To find the individual price you need to divide 180 by 4. You then get 45.
So now to find how many 12 tickets would be, multiply 12 by 45.
The answer would then be $540. Pricey!

Hope this helps!
6 0
3 years ago
Helpppp plzzzzzzzzzzzzzzzz
mariarad [96]
I’m a bit confused by the choices you have been given. Are there any other options? If not, I would choose (5.3,9.8) as 9.8 is correct

8 0
3 years ago
Regina purchased 1.75 pounds of turkey breast from her local deli for $5.99 per pound. To the nearest cent, how much did she spe
VashaNatasha [74]
5.99(1.75)= 10.4825

10.4825 to the nearest hundredth is 10.48

$10.48
3 0
3 years ago
Other questions:
  • What is the answers I suck these type of questions
    15·1 answer
  • Please answer correctly !!!!!! Will mark brainliest !!!!!!!!!
    15·1 answer
  • CJ ran 6 miles and 48 minutes what was his rate in miles per hour
    10·2 answers
  • Chicago Pizza charges $10.49 for a medium 14" pepperoni pizza and NY Pizza charges $20.99 for an x-large 18" pepperoni pizza.
    13·1 answer
  • A delivery truck driver charges a fixed base price of $6 for 2 miles. After 2 miles, he charges an additional $2 for every mile.
    15·2 answers
  • Jacob kept track of the number of hours that he spent playing soccer each week for several weeks he spent 3, 6, 7, 8, and 11 hou
    13·1 answer
  • Just please help i need help please!!
    7·1 answer
  • Which of the following statements is not true?
    15·1 answer
  • Which equation is NOT true when k = -18?
    5·2 answers
  • The plane 15x − 12y + 20z = 60 is represented by which graph below? Notice the z-axis.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!