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
NeX [460]
3 years ago
11

If f(x) = 3 -3 and g(x) = 3x2 + x – 6, find (f + g)(x).

Mathematics
1 answer:
DanielleElmas [232]3 years ago
3 0

Answer:

D

Step-by-step explanation:

note that (f + g)(x) = f(x) + g(x) , thus

f(x) + g(x)

= \frac{x}{2} - 3 + 3x² + x - 6 ← collect like terms

= 3x² + \frac{3}{2} x - 9 → D

You might be interested in
Nine teammates go to the local sandwich shop. All nine
andrezito [222]

Answer:

D)

Step-by-step explanation:

No, a reasonable estimate is around 9. $6 = $54

I got it right on my test

3 0
2 years ago
Evaluate x - 20 when x=3
ryzh [129]

Answer:

-17

Step-by-step explanation:

Plug in 3:

3 - 20 =

Solve:

3-20 = -17

5 0
2 years ago
Read 2 more answers
7. A triangle has an area of 20 in². If the height of the
GenaCL600 [577]

Step-by-step explanation:

the area of a triangle is

baseline × height / 2

in our case

baseline × 5 / 2 = 20 in²

baseline × 5 = 40

baseline = 8 in

7 0
2 years ago
Please help will give brainliest 7
labwork [276]

Answer:

Step-by-step explanation:

You are now a teacher, and you notice that many of your students are consistently making the dividing-out mistake that appears below. Some of the students even admit to knowing the method was wrong as soon as you point it out.

Create a visual to help your students stop making this common mistake: fraction numerator up diagonal strike x squared plus 3 x − 4 over denominator up diagonal strike x squared − 2 x − 8 end fraction .

Your lesson should do the following:

Explain why the dividing-out method is incorrect. You may want to start with a simpler expression and work your way up to polynomials. (For example, compare fraction numerator 3 left parenthesis 5 right parenthesis over denominator 3 end fraction and fraction numerator 3 plus 5 over denominator 3 end fraction.)

Explain when you can cancel a number that is in both the numerator and denominator and when you cannot cancel out numbers that appear in both the numerator and the denominator.

Share tricks, reminders, memory devices, or other methods to help students catch themselves before making this common mistake.

Post your video or series of images. Post answers to the following questions:

A. Why do you think the mistake shown here is such a common one?

B. Have you ever made this mistake before? What helped you stop making this mistake? What will help you stop making this mistake in the future?

Read and comment on the explanations of other student “teachers.”

A. Comment on ideas that helped you better understand or tricks to help you catch yourself before making the dividing-out mistake.

B. Ask a question to help a student improve his or her explanation or make it more thorough.

Respond to replies to your post.

Be sure to check back regularly to participate in the discussion with your fellow students and teacher.

P.S. I can not see pictures or videos that are posted on here, so if you could write everything out it would be kindly appreciated. :)

4 0
3 years ago
Jake is saving for a new tablet. It costs $250, and he has $100. He earns $5 per week for doing chores. Jake wants to figure out
kirza4 [7]

Answer: 250 ≤ 100+5x

150≤5x divide by 5

30≤x

It will take 30 weeks to earn enough.

Step-by-step explanation:

7 0
2 years ago
Other questions:
  • The temperature rises by 15° from -4° what is the new temperature
    13·2 answers
  • A rectangular roof shingle is 7 inches wide and 10 inches long. What is its area?
    5·2 answers
  • A set of dessert glasses are in the shape of a cone. If each glass is 9 cm across and 12 cm tall, what is the volume of each gla
    15·1 answer
  • The exponential function, f(x) = 2x, undergoes two transformations to g(x) = 5 • 2x – 3. How does the graph change? Select all t
    11·1 answer
  • Please Help!
    11·2 answers
  • Which is an equilateral triangle?
    13·1 answer
  • Find the mean for the amounts: $17,485; $14,978; $13,592; $14,500; $18,540; $14,978. Round to the nearest dollar.
    7·1 answer
  • What is the coordinate j(2,-5) after a reflection in the line y=x?​
    13·1 answer
  • Tonya has a rectangular rug with an area of 21 square feet. The rug is 4 feet longer than it is wide. Create an equation that ca
    13·1 answer
  • There is a cylinder with a height of 8 units and a volume of 72 cubic units. What is the radius of the cylinder?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!