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
Ostrovityanka [42]
3 years ago
14

–3(m – 2n – 4) = -9 Given the equation above, what is the value of m – 2n?

Mathematics
2 answers:
Lorico [155]3 years ago
3 0

-3(m - 2n - 4) = -9

m - 2n - 4 = -9/-3

m - 2n - 4 = 3

m - 2n = 7

vaieri [72.5K]3 years ago
3 0

Answer:

m - 2n = 7

Step-by-step explanation:

-3(m -2n - 4) = -9

Divide both sides by (-3)

m - 2n - 4 = (-9)/(-3)

m - 2n - 4 = 3

Add 4 to both sides.

m - 2n - 4  + 4 = 3 + 4

m - 2n = 7

You might be interested in
Cramers rule<br>hurry up plzzz​
olya-2409 [2.1K]

Answer:

Answers provided below

Step-by-step explanation:

From the simultaneous linear equation, we have the coefficient matrix as;

(3 4 5)

(2 -1 8)

(5 -2 7)

The x-matrix is Dx is given by;

(18 4 5)

(13 -1 8)

(20 -2 7)

Similarly, the y-matrix Dy is given by;

(3 18 5)

(2 13 8)

(5 -20 7)

Also,the z-matrix Dz is given by;

(3 4 18)

(2 -1 13)

(5 -2 -20)

Determinant of the coefficient matrix from online determinant calculator is;

D = 136

Determinant of the x-matrix from online determinant calculator is; Dx = 92

Determinant of the y-matrix from online determinant calculator is; Dy = 696

Determinant of the z-matrix from online determinant calculator is; Dz = 576

From crammers rule;

x = Dx/D = 92/136

y = Dy/D = 696/136

z = Dz/D = 576/136

6 0
2 years ago
HELP! Will give branliest!!
nirvana33 [79]

Answer:

10y + 29 ≤ -23

Step-by-step explanation:

subtract 29 from each side to get:

10y ≤ -52

y ≤ -5.2

3 0
3 years ago
The time, t, required to complete a job
tigry1 [53]

Answer:

19 hrs

Step-by-step explanation:

t varies inversely with number of people p

t = k/p

If it takes 7.125 hrs for 8 workers to do the job

K = tp

= 7. 125 x 8

= 57

How many hours will it take if there are 3 workers .

Recall t = k/p

t = 57/3

= 19 hrs

Therefore, It’ll take 19 hrs to Complete the job if there are only three workers.

3 0
3 years ago
What is 5 - 3x + x - 32 in a simplified expression?
tresset_1 [31]

Answer:

-27-2x

Step-by-step explanation:

5-3x+x-32

(collect like terms)

5-32-3x+x

<h2><u><em>-27-2x</em></u></h2>
4 0
3 years ago
Read 2 more answers
Which of the following can be added without altering any of the fractions?
Murrr4er [49]
<h3>Answer: Choice A</h3>

Why? Because the denominators are both the same at 2x+8. We can only add or subtract fractions when the denominators are the same. The general rule for adding fractions is

\frac{A}{C}+\frac{B}{C} = \frac{A+B}{C}

We have numerators A and B added together over a common denominator C. If we didn't have a common denominator, then we'd have to do a bit of algebraic manipulation to get both fractions to a common denominator. It doesn't have to be the lowest common denominator (LCD), though it's often more efficient that way.

4 0
2 years ago
Other questions:
  • Keaton bought a new Jeep for $32,000. The value of the car will depreciate at a rate of 8.5% per year. Growth or decay? What wil
    7·1 answer
  • Solve for m.
    13·1 answer
  • Libby wants to measure the length of a pond. She measured 13 yd from point X to point Z and 12 yd from point Y to point Z. What
    6·2 answers
  • Farmer john has one hundred plots of land. sixty plots grow corn. forty plots grow carrots. these numbers take into account that
    13·1 answer
  • A submarine that is 7500 meters below sea level surfaces at a rate of 80 meters per minute. The
    15·1 answer
  • Find the distance of the following points from the x axis: P(3,0) , Q(0,-3) , R(12,-4) , S(-4,-3)
    13·1 answer
  • PLEASE HELP!!!!<br> solve for x.
    9·1 answer
  • Find 20-24 using the picture provide
    15·1 answer
  • Combine the like terms to create an equivalent expression: -n +(-3) + 371 +5 Stuck? Watch a video or use a hint.​
    9·1 answer
  • PLEASE help me i really apreacatie if you show your work both in numbers and a sentence since i dont know how to explaning tysm
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!