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
kakasveta [241]
3 years ago
11

-4(x+2)-10=5x what is the value of x?

Mathematics
2 answers:
julia-pushkina [17]3 years ago
7 0
Option(B) is the answer

Arte-miy333 [17]3 years ago
7 0
-4(x+2)-10=5x
distribute what's in the bracket
-4x-8-10=5x
then group the like terms
-4x-18=5x
add 4x to both sides
-18=9x
divide both sides by 9 to leave x isolated
-2=x

B is the correct answer, good luck!
You might be interested in
Solve the given system of equations using either Gaussian or Gauss-Jordan elimination. (If there is no solution, enter NO SOLUTI
cricket20 [7]

Answer:

The system has infinitely many solutions

\begin{array}{ccc}x_1&=&-x_3\\x_2&=&-x_3\\x_3&=&arbitrary\end{array}

Step-by-step explanation:

Gauss–Jordan elimination is a method of solving a linear system of equations. This is done by transforming the system's augmented matrix into reduced row-echelon form by means of row operations.

An Augmented matrix, each row represents one equation in the system and each column represents a variable or the constant terms.

There are three elementary matrix row operations:

  1. Switch any two rows
  2. Multiply a row by a nonzero constant
  3. Add one row to another

To solve the following system

\begin{array}{ccccc}x_1&-3x_2&-2x_3&=&0\\-x_1&2x_2&x_3&=&0\\2x_1&+3x_2&+5x_3&=&0\end{array}

Step 1: Transform the augmented matrix to the reduced row echelon form

\left[ \begin{array}{cccc} 1 & -3 & -2 & 0 \\\\ -1 & 2 & 1 & 0 \\\\ 2 & 3 & 5 & 0 \end{array} \right]

This matrix can be transformed by a sequence of elementary row operations

Row Operation 1: add 1 times the 1st row to the 2nd row

Row Operation 2: add -2 times the 1st row to the 3rd row

Row Operation 3: multiply the 2nd row by -1

Row Operation 4: add -9 times the 2nd row to the 3rd row

Row Operation 5: add 3 times the 2nd row to the 1st row

to the matrix

\left[ \begin{array}{cccc} 1 & 0 & 1 & 0 \\\\ 0 & 1 & 1 & 0 \\\\ 0 & 0 & 0 & 0 \end{array} \right]

The reduced row echelon form of the augmented matrix is

\left[ \begin{array}{cccc} 1 & 0 & 1 & 0 \\\\ 0 & 1 & 1 & 0 \\\\ 0 & 0 & 0 & 0 \end{array} \right]

which corresponds to the system

\begin{array}{ccccc}x_1&&-x_3&=&0\\&x_2&+x_3&=&0\\&&0&=&0\end{array}

The system has infinitely many solutions.

\begin{array}{ccc}x_1&=&-x_3\\x_2&=&-x_3\\x_3&=&arbitrary\end{array}

7 0
3 years ago
Find en equation of the tangent line to the curve
valkas [14]
Y=MX+C   C=1  0=m(1)+1 m=-1 Y=-X+1 
7 0
3 years ago
What is 21 > 15 + 2a
raketka [301]
My bests answer I got was a<3
5 0
2 years ago
Adele is driving her car near the Tri-State area. She covers a distance of 221.05 miles in 4 hours. She then stops at a diner, a
olga nikolaevna [1]

The answer is D. 1.5 hours

7 0
3 years ago
Read 2 more answers
PLEASE HELP I WILL MARK BRANLIEST
liubo4ka [24]
31.62
You use pythagorean theorem so 30 is legA and 10 is legB so 20^2+10^2= square root legC which is 31.62
8 0
3 years ago
Other questions:
  • Check my answer please?
    5·1 answer
  • What is the ratio of 24
    10·1 answer
  • Marcus is rewriting a polynomial by combining like terms. Which terms does he still need to combine to finish rewriting the poly
    12·1 answer
  • There are 5,375 pencils in 25 cases. Find the unit rate. pls
    11·2 answers
  • PLS HELP (algebra 1)<br><br><br> solve -6 + 8(16 - 19z)
    15·1 answer
  • (10x5)-(30+20)x10=
    15·2 answers
  • Hi
    14·1 answer
  • What are the coordinates of point Q?
    13·1 answer
  • Find the value of y when x=0 using the equation y=-2/3x +4. Explain
    7·1 answer
  • What is the scale factor from Figure A to Figure B?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!