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
Dmitry [639]
3 years ago
15

If f(x) = x2 – 2x and g(x) = 6x + 4, for which value of x does (f + g)(x) = 0?

Mathematics
1 answer:
Arlecino [84]3 years ago
6 0

Answer:

x = - 2

Step-by-step explanation:

(f + g)(x) = f(x) + g(x)

f(x) + g(x)

= x² - 2x + 6x + 4

= x² + 4x + 4

Equating to zero

x² + 4x + 4 = 0 ← left side is a perfect square

(x + 2)² = 0, thus

x + 2 = 0 ( subtract 2 from both sides )

x = - 2

You might be interested in
A community is planning to build a rectangular garden.the width of the garden is 27/4 feet and the perimeter of the garden is 37
Crank

We know that the width of the garden is = \frac{27}{4} feet = 6.75 feet

and Perimeter of the garden is = 37.5 feet

Also, we know that for a rectangular space perimeter = 2 * (l + w)

⇒ 37.5 = 2 * (l + 6.75)

⇒ 37.5 = 13.5 + 2*l

⇒ 24 = 2*l

⇒ l = 12 feet

Now, we need to determine how much square feet of mulch is required, hence we need to calculate the area of the garden

Area = l * w

⇒ Area = 12 * 6.75

⇒ Area = 81 square feet

Hence, they require 81 square feet of mulch

7 0
4 years ago
4. Six numbers are shown.
Reptile [31]

Step-by-step explanation:

sorry i couldn't solve the last and the last second one

Was it helpful?

comment down

If there is any kind of suspicious mistake

then sorry

7 0
3 years ago
Which relation is a function?
muminat
C. (8,-2), (-2,5), (6,0) is a function, because all the numbers are different unlike A, B, and D those all have the same number either in there domain or range.
4 0
3 years ago
Brenda took her dog to the veterinarian for an exam. The doctor told Brenda her dog needed to lose weight. Her dog weighed 55 po
raketka [301]

Answer:

<h2>18%</h2>

Step-by-step explanation:

Step one;

given

initial weight = 55 pounds

final weight= 45 pounds

Step two:

Required

the % weight decrease

% decrease= initial-final/initial *100

% decrease= 55-45/55 *100

% decrease= 10/55 *100

% decrease= 0.18 *100

% decrease= 18%

4 0
3 years ago
4. What is the slope of the line y = 3? (1 point)
Andreyy89

Answer: Undefined or 0

Step-by-step explanation: Y=3 means there would just be a straight line across on (0,3) and when the slope and rise is 0 it means there is no slope or it is undefined

8 0
3 years ago
Read 2 more answers
Other questions:
  • Convert 9.46 x 10^12 to expanded form
    7·1 answer
  • If the balance at the end of eight years on an investment of $630 that has been invested at a rate of 9% is $1,083.60, how much
    13·1 answer
  • Plz help!!!
    13·1 answer
  • Ine segment AB has endpoints A(–4, –10) and B(–11, –7). To find the x-coordinate of the point that divides the directed line seg
    11·2 answers
  • How many total operations do you have when multiplying two 4X4 matrices?
    10·2 answers
  • Does anyone know #4?
    15·1 answer
  • A self own company charges $40 per month +0.05 cents for each text message sent.Select expression is there a percent of cost in
    14·1 answer
  • 7.45+(-24.45)+74.17+(-76.52)​
    15·1 answer
  • Find the value of the expression: 2xy+2x^2 for x=−2.5 and y=−7.5
    11·1 answer
  • A 13 3/4 -inch candle burns down in 11 hours. If b represents how much of the candle, in inches, has burned away at any time giv
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!