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
ycow [4]
3 years ago
13

X+2y=5

Mathematics
1 answer:
Vilka [71]3 years ago
3 0

Answer:

A)1,-3

Step-by-step explanation:

X+2y=5

X-3y=7

To write a determinant we take the coefficient of the variables

To get first row we take the coefficients of x and y from the equation x+2y = 5

x or 1x  are same

1x+2y = 5

The coefficient of x  is 1  and coefficient of y is 2

So first row is 1 , 2

We do the same for second row

To get second row we take the coefficients of x and y from the equation x-3y = 7

1x - 3y = 7

The coefficient of x  is 1  and coefficient of y is -3

So second row is 1, -3

You might be interested in
PLZ ANSWER THIS. I really need help from smart people.
r-ruslan [8.4K]

Answer:

2x-3y<7

Step-by-step explanation:

Hope it helps (:

4 0
2 years ago
If the volume is 343in cubed than what is the length of one side
love history [14]

the answer would be seven because seven to the 3rd power is 343 and cubed means that number multiplied by itself three times please mark braineist answer!


8 0
3 years ago
The variable z is directly proportional to x. When x is 11, z has the value 44. What is the value of z when x = 21?
dimulka [17.4K]

Directly proportional, both increase/decrease, Multiple k(constant you needed to solve for)..

Inversely --one increases as the other decreases, increase the denominator & fraction gets smaller.... So

Problem:

Dirextly to X (× by X)

Inversely to Y, (÷ by Y)

Z= k X/Y

Solve, working backwards: Z =5 becomes

5 = k (X) ÷ (Y). And

X=15 and Y =9 becomes

5= k(15)/(9). Undo ÷9, ×9 both sides

45= k(15). Now undo ×15 by ÷15 both sides

45/15 = 3. So k=3, (also called your constant of variation)....and your Equation/Proportion becomes...

Z = 3X/Y

Use the new #s.... X=23, Y=14

Z= 3×23÷14 = 69/14. If they want spirochete answer divide and round to corresponding # if decimals

4 0
2 years ago
Select the multiplication sentence that applies the commutative property of multiplication to the example.
Travka [436]

we are given

6 × 8 = 48

we know that

commutative property of multiplication:

a \times b =b \times a

now, we will verify each options

option-A:

we have

6 × 8 = 48

now, we can find it's commutative

so, we get

8 × 6 = 48

so, this is TRUE

option-B:

we have

6 × 8 = 48

now, we can find it's commutative

so, we get

8 × 6 = 48

so, this is FALSE

option-C:

we have

6 × 8 = 48

now, we can find it's commutative

so, we get

8 × 6 = 48

so, this is FALSE



4 0
3 years ago
When a constant force is applied to an object, the acceleration of the object varies inversely with its mass. When a certain con
maria [59]

First:

F=m.a

=4*7

=28N

Second:

F=m.a

28=m.2. (force is constant,so F=28N)

28/2=m

m=14kg.

5 0
3 years ago
Read 2 more answers
Other questions:
  • The school that Stefan goes to is selling tickets to a spring musical. On the first day of ticket sales the school sold 1 senior
    11·1 answer
  • The swahili language is a mixture of arabic and ..
    13·1 answer
  • Rolling a number greater than 4 on a standard number cube
    9·2 answers
  • Let x and y be a whole number greater than 0 with y&gt;x witch has the greater value 3x or 3y
    11·1 answer
  • 10 POINTS AND BRAINLIEST! PLEASE HELP IT WOULD REALLY BE NICE!
    14·1 answer
  • A group of veterinary researchers plan a study to estimate the average number of enteroliths in horses suffering from them. The
    10·1 answer
  • Please help me solve step by step
    14·1 answer
  • PLZ HELP!!!!! ASAP!!!!!!!!!!!! NO FILES!
    15·1 answer
  • Enter your answer in decimal form. <br><br> x=
    6·1 answer
  • I really need help with this !
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!