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
Marizza181 [45]
2 years ago
15

What are the right answers to these questions? This is what I plugged in and I got them wrong.

Mathematics
1 answer:
strojnjashka [21]2 years ago
8 0

Answer:

Concave Upward: (0,2), (4,6), (7,12) (even though the slope changes at x = 9, the slope is still increasing from 9 to 12; notice its upward curve)

Concave Downward: (2, 4), (6, 7)

Inflection Points: (2,2), (4,2), (6,2), (7,3)

Step-by-step explanation:

Recall that concave upward is when the slope is increasing, and concave downward is when the slope is decreasing.

It seems that from your answers (for part a), you are looking for when the slope changes from positive to negative (and vice versa). These two things (the rate of change of the slope and the sign of the slope) are critically different, but are easy to confuse. In other words, you're basing your answers off of maxima and minima (high points and low points on the graph).

What you really want to base your answers on are inflection points, which are points where the slope goes from becoming increasingly more negative/positive to the other.

For example, look at x = 2 on the graph. If we draw a line tangent to the graph for every x, we will see that the line will become steeper and steeper until we reach x = 2, where it will slowly start to taper off until it becomes flat at x = 3. I encourage you to look up some videos on the topic of concavity, they will show it better then I could.

If you can't do that, you can use a ruler to visualize the tangent line as you move it across the graph. When you have to start turning the ruler in the opposite direction to keep it tangent to the graph, you found an inflection point.

Inflection points are points that are on the graph, so I encourage you to keep that in mind when you are answering problems similar to that in part b.

Here is a useful resource: https://www.mathsisfun.com/calculus/concave-up-down-convex.html

Best of luck!

You might be interested in
CAN YOU PLSSSSSSSSSSSSSSSSSSS HELP ME WITH THIS
Bond [772]

Answer:

I think its b

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
If cotθ=1/<img src="https://tex.z-dn.net/?f=%5Csqrt%7Bx%7D%203%5C%5C" id="TexFormula1" title="\sqrt{x} 3\\" alt="\sqrt{x} 3\\" a
kobusy [5.1K]

\text{Given  that,}~\\\\\cot \theta = \dfrac 1{\sqrt 3} \\\\\\\text{So,}~~ \tan \theta = \dfrac 1{\cot \theta} = \sqrt 3\\\\\\\sec^2 \theta + \csc^2 \theta   \\\\=(1+\tan^2 \theta) + (1 + \cot^2 \theta)\\\\=1 +\left (\sqrt 3 \right)^2 + 1 + \left(\dfrac 1{\sqrt 3} \right)^2\\\\=1 +3 + 1 + \dfrac 13 \\\\= 5  + \dfrac 13 \\\\= 5 \dfrac 13

7 0
2 years ago
Find c to complete the perfect trinomial<br><br> x2 + 4x + c
sladkih [1.3K]

Answer:

4

Step-by-step explanation:

I assume that is supposed to be x squared. A perfect trinomial is the product of a perfect square, (x times a number) squared. With these trinomials, you can look at them as: ax squared times bx + c. When a is 1, the fastest way to get c to make a perfect square is to divide b by 2. In this case, it's 4/2 = 2. The last step is to square that number. 2 squared = 4.

8 0
3 years ago
40 POINTS HELP ME PLEASE!
melomori [17]

Answer:

the ones are options 2 and 3

4 0
3 years ago
Read 2 more answers
EXPERTS/ACE/GENIUSES
Ivan
The answer would be D
7 0
3 years ago
Other questions:
  • Does the Commutative Property of Addition apply when you add two negative integer?
    12·2 answers
  • Y=x2-10x+16 in axis of symmetry
    8·1 answer
  • What is 5.151515 to 2 decimal places​
    7·2 answers
  • Solve each system of equation by grapthing y= -2x-4 y=1/2x+1
    7·1 answer
  • Help me solve this problem please
    6·1 answer
  • F(x)=5^x+1 what’s the rate of change between x=0 and x=4
    12·1 answer
  • Listed below are the 35 members of the Metro Toledo Automobile Dealers Association. We would like to estimate the mean revenue f
    6·1 answer
  • may you please help me :D
    15·1 answer
  • Isabella saved $13,000 and bought a car that cost $11,675. The insurance for the car will cost $650 per year.
    10·2 answers
  • The diameter of a circle is 34 kilometers. What is the circle's circumference?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!