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3 years ago

What are the two consecutive odd integers whose product is 1443?

1 answer:

3 0

You'd do n+n+1= 1443. add the n's. 2n +1=1443.
Subtract 1 from 1443. the equation is now 2n=1442 then do
$\sqrt[2]{1442}$
then you'd get 721 then the 2 numbers should be 171 and 173 since they're odd.

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Solve for x: 2x^2+4x=-6

Delvig [45]

Answer:

-1 -+i/5/2

Step-by-step explanation:

7 0

4 years ago

what is the solution to the system of equations: x- - y-z = 2, - x - 3 y - 2 z + 4, -x - 2 z = 10

ladessa [460]

Given equations are x- - y-z = 2, - x - 3 y - 2 z + 4, -x - 2 z = 10 .

It seems you have missed to write = in the 2nd equation so i have fixed the sign and going to solve the following system of equations:

x-y-z=2 ...(i)

-x-3y-2z=4 ...(ii)

-x-2z=10 ...(iii)

solve (i) for x

x=2+y+z ...(iv)

plug (iv) into (ii)

-x-3y-2z=4

-(2+y+z)-3y-2z=4

-2-y-z-3y-2z=4

-2-4y-3z=4

-4y-3z=6...(v)

plug (iv) into (iii)

-x-2z=10

-(2+y+z)-2z=10

-2-y-z-2z=10

-2-y-3z=10

-y=12+3z

y=-12-3z...(vi)

plug (vi) into (v)

-4y-3z=6

-4(-12-3z)-3z=6

48+12z-3z=6

48+9z=6

9z=-42

z=-14/3

Now plug value of z into (vi)

y=-12-3z=-12-3(-14/3)=-12+14=2

y=2

plug value of y and z into (iv)

x=2+y+z=2+2-14/3=-2/3

Hence final answer is x=-2/3, y=2, z=-14/3

3 0

3 years ago

A)<br> 2x + y - 12 = 0<br> x + y + 3 = 0

AVprozaik [17]

Answer:

x=15 and y= -18

Step-by-step explanation:

$2x + y - 12 = 0$ Equation 1

$x + y + 3 = 0$ Equation 2

From two given equations, we can find the value of both x and y by finding the value of one variable from any one of the two equations in terms of other variable and putting it to other equation.

Solving equation 1

Finding 'y' in terms of 'x' $2x+y=12\\y=12-2x$ Equation 3