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
5 – 6x = 8x + 17 and simplify <img src="https://tex.z-dn.net/?f=%5Cfrac%7B-6%7D%7B7%7D" id="TexFormula1" title="\frac{-6}{7}" al
NikAS [45]

Answer:

x = -6/7

Step-by-step explanation:

5 – 6x = 8x + 17

-5                 - 5           Subtract 5 from both sides

-6x = 8x + 12

-8x   - 8x                     Subtract 8x from both sides

-14x = 12                      Divide both sides by -14

x = -12/14                     Simplify

x = -6/7

7 0
2 years ago
A volunteer group picked up 3 times as many plastic bottles as cans in their community. The number of papers they picked up was
sweet-ann [11.9K]

try 4,320 for your answer

4 0
2 years ago
359, 357, 348, 347, 337, 347, 340, 335, 338, 348, 339, 356, 336, 358 a. median: 359 mode: 358 c. median: 347 mode: 347 AND 348 b
Elodia [21]

Answer:

Option C (Median: 347 and Mode: 347 and 348)

Step-by-step explanation:

Median is the middle point of the data and mode is the most repeated observation is the data. The first step involved in calculating the median it to list the observations in the ascending order. This gives:

335, 336, 337, 338, 339, 340, 347, 347, 348, 348, 356, 357, 358, 359

The second step is to identify the middle number (in case the observations are in odd numbers) or numbers (in case the observations are in even numbers) after the ascending order step has been done. It can be observed that the middle numbers in this data set are 347 and 347. Since there are two numbers, so their average will be the median of this data set. Therefore, the median is 347. It can be seen that maximum repetitions are 2 times for 347 and 348. So the mode is 347 and 348.

Therefore, Option C is the correct answer!!!

5 0
3 years ago
I need help on #12 please
Novosadov [1.4K]
So 10.38 gal at 2.289 oer gal but you want american mony so round 2.289 to two decimal places so 2.29 per gallon

2.29 times 10.38=23.7702 but you just cross out the '2' in the ten-thousanth's place because 1/50 of a cent is really small


it is not possible to pay 9/10 of a cent so they just want you to round it up to 1 cent or10/10 cent
8 0
3 years ago
The graph of the equation x – 2y = 5 has an x-intercept of 5 and a slope of 1/2 . Which shows the graph of this equation?
Shtirlitz [24]
It would be the last graph because at the x-intercept, it crosses the 5
4 0
3 years ago
Read 2 more answers
Other questions:
  • A thermometer is removed from a room where the temperature is 70° F and is taken outside, where the air temperature is 30° F. Af
    9·1 answer
  • In a game, William and Mary take turns choosing cards at random from a bag. Each card shows a “W” or “M”. A player chooses a car
    8·1 answer
  • 29+d=54;24,25,26 what
    10·1 answer
  • X − 6 = 63 − 10(x + 8)
    7·2 answers
  • Red bricks and grey bricks were used to build a decorative wall. The number of red bricks divided by number of grey bricks was 5
    15·1 answer
  • . 2(x + 4) = -5x + 1 what the equation?<br>​
    11·1 answer
  • Which number best represents the situation. "A plane descends 1, 500ft?
    5·1 answer
  • Serenity has 83.2 ounces of candy left over from Halloween. She want to give each of her friends 1.28 ounces of candy. How many
    9·1 answer
  • For THE LAST TIME CAN SOMEONE PLEASE I BEG YOU AND HELP ME BEFORE I FAINT BECAUSE I HAVE BEEN WORKING ON THIS SINCE THE MORNING
    13·1 answer
  • Find an expression which represents the difference when (-5x-y) is subtracted from (9x+2y) in simplest terms.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!