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4 years ago

6

Solve the system of Linear equations by elimination

1 answer:

Delvig [45]4 years ago

3 0

With these, you pick either equation and a variable to solve for; let's solve for x using the 2nd eq: 3x - 4y = 11; 3x = 4y - 11; x = (4/3)y - (11/3).

Now, plug x into the first eq: 3( (4/3)y - (11/3) ) + 4y = 5; 4y -11 +4y = 5; 8y = 16; y = 2.

To get an actual number for x, plug in y into either equation and you should get x = -1.

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Consider the line segment.

V125BC [204]

Part A:
x = 8
Part B:
64cm
Part C:
64cm
Part D:
yes

8 0

4 years ago

From 45ft to 92ft =

scoray [572]

So 45 + 92?
45+92=137

3 0

3 years ago

Read 2 more answers

What are the dimensions of the matrix?

salantis [7]

The order of a matrix is m×n where m is the number of rows and n is the number of columns.

can you count and find what are m and n here?

6 0

3 years ago

THE RATIO OF ANNUAL INCOMES OF A AND B IS 4 :3 AND THEIR ANNUAL EXPENDITURE IS 3 :2 IF EACH OF THEM SAVES SHILLINGS 1000 A YEAR

pickupchik [31]

<u>Answer:</u>

Annual Income of A= $4x=4*1000=4000$

and

Annual Income of B= $3y=3*1000=3000$

<u>Step-by-step explanation:</u>

<u>Given Data:</u>

Ratio of annual income of A and B=4:3

Ratio of expenditures of A and B=3:2

Saving of A and B=1000

<u>Required:</u> Annual Income of A and B=?

<u>Solution:</u>

If ratio of income of A and B is 4:3

then let Income of A= $4x$ and Income of B= $3x$

If ratio of expenditure of A and B is 3:2

then let expenditure of A= $3x$ and expenditure of B= $2x$

Therefore,

$4x-3x=1000$ ........... $Eq(1)$

and $3x-2x=1000$ .......... $Eq(2)$

subtracting Eq(1) and Eq(2), we get

$4x-3y=1000\\-(3x-2y)=1000\\......................\\x-y=0$

$x=y.....Eq(3)$

putting $x=y$ in Eq(1), we get value of $x$ as

$4x-3x=1000$

$x=1000\\thus, y=1000 \\$ because x and y are equal in Eq (3)

Now, Annual Income of A= $4x=4*1000=4000$

and Annual Income of B= $3y=3*1000=3000$

7 0

3 years ago

Which of the binomials below is a factor of this trinomial?

Irina18 [472]

I hope this helps you

5.(x^2+3x-10)

x +5

x -2

5. (x+5)(x-2)

8 0

3 years ago