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
lubasha [3.4K]
3 years ago
9

Which matrix can be used to solve the system?

Mathematics
1 answer:
Brut [27]3 years ago
4 0
It's the last choice.  In the top row you have the 1's that are the coefficients on the x and the y, and the solution for that equation is 21; in the second row you have the 5 from the x and the 4 from the y and the solution for that equation which is 20.  I'm more used to writing them down instead of across, but there you have it anyways
You might be interested in
How do find the volume of l blocks
kow [346]
For number 1)

you must first split the figure, so subtract the 8 mm from 12 mm to find the width.... = 4mm

so you use the numbers 10 x 2 x 4 = 80 mm

and 2 x 8 x 3 = 48 mm


80 mm + 48 mm = volume of the figure
5 0
3 years ago
A survey of all planet Umpt found that 36 beings preferred dubble juice to all the other juices. If 40 being were surveyed all t
frozen [14]

Answer:

90%

Step-by-step explanation:

Number of beings that preferred dubble juice to all the other juices = 36

Number of beings surveyed = x

The percentage of people that preferred dubble juice is calculated as:

(Number of beings who preferred dubble juice/Total number of beings surveyed) × 100

36/40 × 100

= 90%

90% of beings preferred dubble juice.

4 0
3 years ago
What are the solutions of the system 7x + 3y=-3 and y= -2*?
mafiozo [28]

Answer:

opt 4

Step-by-step explanation:

when x=0, 0+3y= -3, so y=-1    (0,-1) is solution

         when x=3 , 21+3y=-3,  3y= -3-21= -24

                                                    y= -8                  (3,-8) is also solution

8 0
3 years ago
(on all odd numbered questions) can someone explain? Starting on "COPY AND COMPLETE THE STATEMENT"
shusha [124]
It is asking you to convert them to different units of measurements.
6 0
3 years ago
Mark wants to know how many families in neighborhood plan to attend the neighborhood party
maria [59]

Answer:

is this an actual question? or you jus sayin stuff

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • Neep help,please and thank you
    11·1 answer
  • Can you guys plz help me with the customary units of weight
    10·1 answer
  • Q # 18 Find the midpoint of. A B
    8·1 answer
  • Points X and Z are on a number line, and point Y partitions line XZ into two parts so that the ratio of the length of line segme
    7·1 answer
  • Simplify √3 (√3 + x)
    11·2 answers
  • Line AD bisects angle BAC and angle FDE. DE measures 5 cm and AE measures 4 cm. What is the length of FD?
    13·1 answer
  • Use the remainder theorem and the factor theorem to determine whether (y − 3) is a factor of (y4 + 2y2 − 4).
    12·2 answers
  • . Fast train gets from the starting to the final station in 4 hours and 20 minutes. The slower local train, whose average speed
    15·1 answer
  • Damons father started a college fund on Damons 8th birthday. He deposited $7500 into a certificate of deposit that yields an int
    7·1 answer
  • The following represent which equation?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!