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
arlik [135]
3 years ago
12

Solve for the value of x ? −2(x+13)+9x=4

Mathematics
2 answers:
Reika [66]3 years ago
7 0

Answer:

30/7

Step-by-step explanation:

Distribute:

-2x-26+9x=4

Combine like terms:

7x-26=4

Add 26.

7x=30

Divide by 7:

x=30/7.

Hope this helps :D

Novay_Z [31]3 years ago
6 0

Answer:

x = 30/7

Step-by-step explanation:

−2(x+13)+9x=4

Multiply out the bracket

-2x - 26 + 9x = 4

Combine the x terms

(-2x + 9x) - 26 = 4

7x - 26 = 4

Rearrange into the form Ax = b, so all the x's are on one side and the integers are on the other.

7x = 4 + 26

7x = 30

Rearrange into the form x = b, so x is on one side and the integer is on the other.

x = 30/7

You might be interested in
Tom determines that the system of equations below has two solutions, one of which is located at the vertex of the parabola.
xxTIMURxx [149]

Answer:

Option A: b must equal 7 and a second solution to the system must be located at the point (2, 5)

Step-by-step explanation:

<u><em>The complete question is</em></u>

Tom determines that the system of equations below has two solutions, one of which is located at the vertex of the parabola.

Equation 1: (x – 3)2 = y – 4

Equation 2: y = -x + b

In order for Tom’s thinking to be correct, which qualifications must be met?

A: b must equal 7 and a second solution to the system must be located at the point (2, 5).

B: b must equal 1 and a second solution to the system must be located at the point (4, 5).

C: b must equal 7 and a second solution to the system must be located at the point (1, 8).

D: b must equal 1 and a second solution to the system must be located at the point (3, 4).

step 1

Find the vertex of the quadratic equation

The general equation of a vertical parabola in vertex form is

y=a(x-h)^2+k

where

(h,k) is the vertex

we have

(x-3)^{2}=y-4

so

y=(x-3)^{2}+4

The vertex is the point (3,4)

step 2

Find out the value of b in the linear equation

we know that

If the vertex is a solution of the system of equations, then the vertex must satisfy both equations

substitute the value of x and the value of y of the vertex in the linear equation

y=-x+b

For x=3, y=4

4=-3+b\\b=7

so

y=-x+7

step 3

Find out the second solution of the system of equations

we have

y=(x-3)^{2}+4 -----> equation A

y=-x+7 ----> equation B

solve the system of equations by graphing

Remember that the solutions are the intersection points both graphs

The second solution of the system of equations is (2,5)

see the attached figure

therefore

b must equal 7 and a second solution to the system must be located at the point (2, 5)

5 0
3 years ago
Read 2 more answers
The answer I neeed it now
slava [35]
Anser is B). Subtract smallest number
5 0
3 years ago
Find the missing measure​
Vilka [71]
25 degrees because 90-65=25
5 0
3 years ago
The sum of 3 consecutive
Troyanec [42]
The three numbers are 52, 53, 54.

52+53=105 105+54=159
7 0
2 years ago
Read 2 more answers
Use the diagram to find the domain and range of f.<br> The domain is ​{___}
adelina 88 [10]

Answer:

can i see a pic

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Other questions:
  • -7k + 5(6k + 5) &lt; 209
    5·1 answer
  • If last years sales were $200,000 and this years increase was 250% how much are this years sales
    9·2 answers
  • todays typical hip implant weighs about 50% less than it did 20 years ago.if an implant weighs about 3lb today how much did it w
    14·2 answers
  • N x 5.06=506.00<br> What's the value of n
    11·2 answers
  • Can anyone help me with this
    14·1 answer
  • There are 60 slices of cheesecake in 5 cheesecakes.If There are the same number of slices in each cheesecake, how many slices ar
    15·1 answer
  • Joey has a playlist that he listens to on his walk to school each morning. The songs are played at random, and none of the songs
    11·1 answer
  • If the radius of a circle is 2.6 inches, what is the diameter of the circle?
    13·2 answers
  • PLEASE HELP 30 POINTS Wendell is looking over some data regarding the strength, measured in Pascals (Pa), of some building mater
    6·1 answer
  • GUYS PLEASE HELP ME
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!