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
9966 [12]
3 years ago
12

Step by step please (variable expression)

Mathematics
1 answer:
Naddika [18.5K]3 years ago
6 0

Answer:

139

Step-by-step explanation:

Substitute x for 15.

9(15)+4

Then multiply:

135+4

And then add:

139

You might be interested in
the sum of three numbers is 2100. the first number x is equal to the sum of the other two (y and z) which are equal to each othe
max2010maxim [7]
We will have a system of equations, and we are going to solve it by using substitution.
Let's make the equations.
x+y+z=2100
z+y=x
Since y and z are equal, I think it is easier for us to have them as one variable for now. Let the value of z and y be a.
These are the equations now.
x+2a=2100
2a=x
Since the second equation is giving the value of x, let it replace the value of x also in the first equation.
2a+2a=2100
4a=2100
2100÷4= 525
so, x and y equal 525. Let's put this in our original equation.
x+525+525=2100
x+ 1,050= 2,100
x= 1,050
So, x=1,050, y= 525 =z.

7 0
3 years ago
What is the slope of the line QR?
svetoff [14.1K]

Answer:

-3

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
20 POINT QUESTION!!!
Mazyrski [523]

Answer:

Graph A

Step-by-step explanation:

For each piece of the function the first number is included (0, 4, 8) and second number excluded (4, 8, 12). Included points are solid and excluded are open dots.

It's correctly reflected in A graph only.

8 0
3 years ago
Read 2 more answers
Write the following polynomial in standard<br> form: <br><br> 4x+3-4x2-10x3
Ne4ueva [31]

Answer:

− 10 x ^3 − 4 x ^2 + 4 x + 3

Step-by-step explanation:

5 0
3 years ago
Can someone help me asap!<br><br> ​
lilavasa [31]

Answer:

B negative

Step-by-step explanation:

use real numbers?

n is +9

m is -11

m/n * (-m*n^2)

-11/9 * (11*81)

-11/1 * (11*9)

-11 * 99

-1089

6 0
2 years ago
Other questions:
  • Felicia scored 15 points in the first half and 33 points in all. how many points did she score in the second half
    9·1 answer
  • From the top of a 150-ft lighthouse, the angle of depression to a ship in the ocean is 22°. How far is the ship from the base of
    9·2 answers
  • Using the piling method, which of the following can be constructed from polygons alone and discs alone
    5·2 answers
  • A real estate broker’s base salary is $18,000. She earns a 4% commission on total sales. How much must she sell to earn $55,000
    8·1 answer
  • Please help me out, I don't get it
    12·1 answer
  • Please help me find the solution ​
    14·1 answer
  • A system of two linear equations has infinite solutions. What does this tell you about the graph of the system?
    13·1 answer
  • N
    13·1 answer
  • Which of the following multiplication problems has a product that is less than 3/8 Select three that are correct.
    11·2 answers
  • 4-6 study guide and intervention isosceles and equilateral triangles
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!