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
irina1246 [14]
3 years ago
8

What is the solution of the matrix equation?

Mathematics
1 answer:
katrin [286]3 years ago
6 0

Hello from MrBillDoesMath!

Answer:

The first choice ( -12, 20)



Discussion:

Using matrix multiplication we find the equations:


1x  + 1y = 8                     (A)

2x  + 3y = 36                   (B)


Next, compute

  2(A) - B  =>

         (2x + 2y) - (2x + 3y) = 2*8 - 36    =>

          (2x - 2x) + ( 2y-3y) = 16 - 36 =>

          -y = -20  =>

         y = 20


Substituting this y value in (A) gives

         x + 20 = 8 =>

         x = 8 - 20 =>

        x = -12


The answer is the first choice ( -12, 20)


Thank you,

MrB

You might be interested in
What is the sqaure root of 40?​
Kobotan [32]

Answer:

6.32455532034 or just 6

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Find m∠USW if m∠USW = 7x - 34 and m∠TSR = 4x + 9.
nikitadnepr [17]

In this question, it is given that the measurement of angles USW and TSR are 7x-34 and 4x+9 .

First we have to find the relationship between those two angles .

And these angles are vertical opposite angles which are congruent .

Therefore

m \angle USW = m \angle TSR

7x-34 = 4x+9
\\
3x = 43
\\
x = 14.33

Therefore measurement of angle USW is

=7(14.33)-34 =66.31 degree

5 0
3 years ago
Solve for c.<br><br>Give an exact answer.<br><br><br>0.2(10−5c)=5c−16
Zielflug [23.3K]
C = 3
You isolate the variable by dividing each side by factors that don’t contain the variable
5 0
3 years ago
How much water conditioner for 2.5 gallon tank?
vivado [14]
If i'm correct you should add 0.5 mL to your 1 gallon tank, and I would say about 1.25 mL to your 2.5 gallon. It will not be extreme if you end up putting a little more in than you are supposed to. I'm not 100% because i haven't slept so my brain is being slow.
8 0
3 years ago
A store sells mugs. Each mug costs the same amount. During a sale, the store reduces the price of each mug by $1.75. Wen spends
Ostrovityanka [42]

Answer:

  • $7.39

Step-by-step explanation:

Let the initial price be x

<u>Then the reduced price is </u>

  • x - 1.75

<u>If 5 mugs cost $28.20, we have equation:</u>

  • (x - 1.75)*5 = 28.20
  • x - 1.75 = 28.20/5
  • x - 1.75 = 5.64
  • x = 1.75 + 5.64
  • x = 7.39

Initial price for 1 mug was $7.39

4 0
3 years ago
Read 2 more answers
Other questions:
  • After Elise deposits $15.50 into her bank account her balance is 325
    5·2 answers
  • Please help. I need an answer ASAP. Calculus question.
    13·1 answer
  • Which describes the solution set of (5x –1)(x + 2) = 8x – 4?
    11·1 answer
  • Evaluate the expression 12-(8+3)
    11·2 answers
  • Help pls trying to find the surface area
    12·1 answer
  • What is the product of (-7)(-4)?
    7·1 answer
  • Can someone please just answer these question? Problems on integers, primes, and digits
    11·1 answer
  • Tiffany wanted belgian waffles for breakfast while on her dream vacation.
    11·2 answers
  • What minus what equals 216?
    6·2 answers
  • A candy store sells 3 different flavors of soda: orange, vanilla, and root beer. An order of soda comes with 4 straw choices: pa
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!