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
ivanzaharov [21]
3 years ago
10

Find (f + g)(x) and its domain.

Mathematics
1 answer:
Nostrana [21]3 years ago
3 0

Answer:

The domain of function( f+ g)(x) ( (-∞,∞))

Step-by-step explanation:

Given  ( f + g)x = f(x) +g(x)

The domain of function (f + g)(x)  is (-∞,∞)

<em>Example:-</em>

<em>f(x) = 2 x² + 3x and  g(x) =  4x² +3</em>

<em>(f + g)(x) = f(x) +g(x)</em>

<em>              =  2 x² + 3x + 4 x² + 3</em>

<em>             =  6x ² + 3 x + 3</em>

<em>The domain of  (f + g) (x)  is ( -∞,∞))</em>

You might be interested in
What is commutative property
timurjin [86]

Commutative property of addition:

The property that states the sum of an addition problem will be the same no matter the order of its numbers.
a + b = b + a
6 0
4 years ago
5/8x + 4 = 3/8x + 12
Leya [2.2K]

Answer:

      x = 32

Rearrange:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

                    5/8*x+4-(3/8*x+12)=0

Step by step solution :

Step  1  :

           3

Simplify   —

           8

Equation at the end of step  1  :

   5         3

 ((—•x)+4)-((—•x)+12)  = 0

   8         8

Step  2  :

Rewriting the whole as an Equivalent Fraction :

2.1   Adding a whole to a fraction

Rewrite the whole as a fraction using  8  as the denominator :

         12     12 • 8

   12 =  ——  =  ——————

         1        8  

Equivalent fraction : The fraction thus generated looks different but has the same value as the whole

Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator

Adding fractions that have a common denominator :

2.2       Adding up the two equivalent fractions

Add the two equivalent fractions which now have a common denominator

Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:

3x + 12 • 8     3x + 96

———————————  =  ———————

     8             8  

Equation at the end of step  2  :

   5               (3x + 96)

 ((— • x) +  4) -  —————————  = 0

   8                   8    

Step  3  :

           5

Simplify   —

           8

Equation at the end of step  3  :

   5               (3x + 96)

 ((— • x) +  4) -  —————————  = 0

   8                   8    

Step  4  :

Rewriting the whole as an Equivalent Fraction :

4.1   Adding a whole to a fraction

Rewrite the whole as a fraction using  8  as the denominator :

        4     4 • 8

   4 =  —  =  —————

        1       8  

Adding fractions that have a common denominator :

4.2       Adding up the two equivalent fractions

5x + 4 • 8     5x + 32

——————————  =  ———————

    8             8  

Equation at the end of step  4  :

 (5x + 32)    (3x + 96)

 ————————— -  —————————  = 0

     8            8    

Step  5  :

Step  6  :

Pulling out like terms :

6.1     Pull out like factors :

  3x + 96  =   3 • (x + 32)

Adding fractions which have a common denominator :

6.2       Adding fractions which have a common denominator

Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:

(5x+32) - (3 • (x+32))     2x - 64

——————————————————————  =  ———————

          8                   8  

Step  7  :

Pulling out like terms :

7.1     Pull out like factors :

  2x - 64  =   2 • (x - 32)

Equation at the end of step  7  :

 2 • (x - 32)

 ————————————  = 0

      8      

Step  8  :

When a fraction equals zero :

8.1    When a fraction equals zero ...

Where a fraction equals zero, its numerator, the part which is above the fraction line, must equal zero.

Now,to get rid of the denominator, Tiger multiplys both sides of the equation by the denominator.

Here's how:

 2•(x-32)

 ———————— • 8 = 0 • 8

    8    

Now, on the left hand side, the  8  cancels out the denominator, while, on the right hand side, zero times anything is still zero.

The equation now takes the shape :

  2  •  (x-32)  = 0

Equations which are never true :

8.2      Solve :    2   =  0

This equation has no solution.

A a non-zero constant never equals zero.

Solving a Single Variable Equation :

8.3      Solve  :    x-32 = 0

Add  32  to both sides of the equation :

                     x = 32

One solution was found :

                  x = 32

Step-by-step explanation:

6 0
3 years ago
The ratio of the surface areas of two similar solids is 16:144 what is the ratio of their corresponding side lengths
Softa [21]

Answer:

The ratio of their corresponding side lengths is equal to \frac{1}{3}

Step-by-step explanation:

step 1

<em>Find the scale factor</em>

we know that

If two figures are similar, then the ratio of its surface areas is equal to the scale factor squared

Let

z-------> the scale factor

x----> the area of the smaller solid

y----> the area of the larger solid

so

z^{2}=\frac{x}{y}

In this problem we have

\frac{x}{y} =\frac{16}{144}

substitute

z^{2}=\frac{16}{144}

square root both sides

z=\frac{4}{12} ------> scale factor

Simplify

z=\frac{1}{3}

step 2

<em>Find the ratio of their corresponding side lengths</em>

we know that

If two figures are similar, then the ratio of its corresponding sides is equal to the scale factor

In this problem we have that the scale factor is equal to \frac{1}{3}

therefore

The ratio of their corresponding side lengths is equal to \frac{1}{3}

3 0
4 years ago
Read 2 more answers
Can someone help me with this
Whitepunk [10]

Answer:

8/3 or 2 2/3 as a mixed number

Step-by-step explanation:

6 0
3 years ago
Enrique has a total of 71 flowers in his garden. All of the fowers were planted in 6 rows.
Naya [18.7K]
The answer will be A. Hope it help!
4 0
4 years ago
Read 2 more answers
Other questions:
  • If g(x) = {(4, -5), (-3, 2), (-6, 1), (1,0)}, which set of ordered pairs represents
    8·1 answer
  • coleton measures the sides of a rectangle piece of plywood. one side is 72.6 inches long, and the shorter side is 36 inches long
    5·1 answer
  • Help quickkkkkk- I’m terrible at dis stuff
    15·1 answer
  • By Ohm’s law, the current flowing in a wire varies inversely to the resistance of the wire. If the current is 5 amperes (A) when
    7·1 answer
  • Just honest opinion I want to ask look I am Indian so any one interested to be my "friend"​
    6·2 answers
  • WILL GIVE BRAINLIEST IF CORRECT<br> The value of x that makes lines a and b parallel is
    12·1 answer
  • Sara has saved $6. She earns $7 per hour at her job. She needs a minimum of $94 to buy her new bike. What is the minimum number
    13·2 answers
  • At a drop-in mathematics tutoring center, each teacher sees 4 to 8 students per hour. The probability that a tutor sees 4 studen
    13·1 answer
  • 3x-y=-5<br><br>5x+7y=29<br><br>Solve this for me using substitution pls
    5·1 answer
  • Write an equation of the line that passes through (18,2) and is parallel to the line 3y-x=-12 .
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!