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
likoan [24]
3 years ago
14

3.18x+2.6+0.9x+x=28 Solve please, brainliest will be awarded

Mathematics
2 answers:
Elis [28]3 years ago
8 0

Answer:

x=5

Step-by-step explanation

3.18x+2.6+0.9x+x=28

3.18x+0.9x+x+2.6=28

5.08x+2.6=28

5.08x+2.6-2.6=28-2.6

5.08x=25.4

x=5

hope it helps

Bad White [126]3 years ago
7 0

Answer:

X=5

3.18x +2.6 +0.9x +x= 28

add all the Xs

3.18x+0.9x+1x=5.08

5.08x+2.6 =28

-2.6. -2.6

5.08x= 25.4

5.08÷5.08 =x

25.4÷5.08=5

x=5

You might be interested in
Algebra help - asymptotes
motikmotik

Find where the equation is undefined ( when the denominator is equal to 0.

Since they say x = 5, replace x in the equation see which ones equal o:

5-5 = 0


So we know the denominator has to be (x-5), this now narrows it down to the first two answers.


To find the horizontal asymptote, we need to look at an equation for a rational function: R(x) = ax^n / bx^m, where n is the degree of the numerator and m is the degree of the denominator.


In the equations given neither the numerator or denominators have an exponent ( neither are raised to a power)

so the degrees would be equal.

Since they are equal the horizontal asymptote is the y-intercept, which is given as -2.


This makes the first choice the correct answer.

8 0
3 years ago
16) Your salary goes from $8.75 an hour at your present job to $16.50 an hour in your new job. What is
Agata [3.3K]

Answer:

The percent change in salary from one job to the next is 88.57%.

Step-by-step explanation:

The previous salary of per hour =  $8.75 per hour

The current salary of per hour  = $16.50 per hour

Change in the salary rate per hour  =  Current salary  -  Previous Salary

                                                             = $16.50 per hour -  $8.75 per hour

                                                             =$7.75 per hour

⇒The change in the salary per hour rate is $7.75

Now, \textrm{Percentage Change in salary}  = \frac{\textrm{Change in the rate of salary}}{\textrm{Previous Salary}}  \times 100

= \frac{7.75}{8.75}  \times 100 = 88.57

or, the change in salary percentage is 88.57%

Hence, the percent change in salary from one job to the next is 88.57%.

4 0
3 years ago
Mmmmm help HELPPPPP,,,,,,
Aleks [24]

Answer:

I guess it's 63degrees

I hope it will help

4 0
2 years ago
The bookstore has six red school jerseys, five blue school jerseys, and ten green school jerseys to choose from. If a student se
slega [8]
Idkcczsnbzznnhdmsbdhsmmeyfhssfmgbhsngmfbd
3 0
3 years ago
The polynomial $f(x)$ has degree 3. If $f(-1) = 15$, $f(0)= 0$, $f(1) = -5$, and $f(2) = 12$, then what are the $x$-intercepts o
Alex_Xolod [135]

Your calculator's cubic regression function can tell you the equation is

... f(x) = 2x³ + 5x² -12x = x(x +4)(2x-3)

The x-intercepts are -4, 0, +1.5.

_____

If you want to solve this "by hand", you can first of all recognize that since there is an x-intercept at 0, the cubic will only have three coefficients. That is, you can write the equation as

... f(x) = ax³ + bx² + cx

Substituting the given points (except (0, 0)) gives three linear equations in a, b, c.

... -a +b -c = 15 . . . . . for x=-1

... a + b + c = -5 . . . . for x=1

... 8a +4b +2c = 12 . . for x=2

adding the first two equations gives 2b=10, or b=5. Now, you can reduce the system to

... a + c = -10

... 4a +c = -4

Subtracting the first of these equations from the second gives 3a=6, or a=2. That tells you c=-12 (from a+c=10).

Then your equation is

... f(x) = x(2x² +5x -12)

Factoring by any of the usual techniques, or graphing, or using the quadratic formula will tell you the zeros (x-intercepts) are as above.

_____

Since the input values are sequential, you can also develop the function from differences of the output values. Those are 15, 0, -5, 12. First differences are -15, -5, +17. Second differences are +10, +22. The third difference is 12. Using the first of these differences in appropriate places in the interpolating polynomial formula, we have

... f(x) = 15 + (x+1)(-15 + (x)/2·(10 + (x-1)/3·(12))) = 2x³ +5x² -12x . . . . as above

4 0
3 years ago
Other questions:
  • Rick shared his bag of grapes with his friends. He gave 2/10 of the bag to Melissa and 4/10 of the bag to Ryan. What fraction of
    7·1 answer
  • Select the correct answer (49x^2y)^1/2(27x^6y^3/2)^1/3
    15·1 answer
  • G(x)=4x^2-3x+7<br> find g(3)
    8·2 answers
  • There are 75 boys in the sixth grade. The ratio of girls to boys is 7 to 5. How many girls are there in sixth grade?
    14·1 answer
  • Some friends went to lunch and split the bill equally. If each person paid $6.75, how many people went to lunch thinking. Use a
    7·2 answers
  • Write two linear functions, (x) and g(x). For example, f(x) = 3x - 7 and
    11·2 answers
  • In converting 9 inches to yards, what unit (omit the number) would you place
    7·1 answer
  • The regular price of a video game is $69.75. This week it is on sale for 15% off. What does the game cost this week?
    11·2 answers
  • The graph of y = e−x + 3 is shown. What are the y-intercept and the horizontal asymptote, and do they represent exponential grow
    15·1 answer
  • A right triangle is ____ a scalene triangle.<br> Always, sometimes, or never
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!