All categories

3 years ago

| 12x +18y=1081 x + y =8

Mathematics

1 answer:

Sauron [17]3 years ago

7 0

Answer:

(x,y)=(4/569),(228/569)

Step-by-step explanation:

multiply both ides by -18

eliminate one variable by adding the equations

divide both sides by -19346

sub the value of x into the equation

solve the equation

You might be interested in

In a Company 75% of workers are men. If 825 people work for the company who Orangemen how many workers are there in all?

puteri [66]

Answer:

1,100

Step-by-step explanation:

Since we know that 825 people are men, and that 75% of the people are men, we can write an equation to help us solve this, which is x times 0.75= 825, with x representing how many people work at the company. We must divide both sides by 0.75 to isolate the variable x and get our answer, which is 1,100 as x= 1,100 (825 divided by 0.75 equals 1,100).

8 0

3 years ago

The product of any interger and 2 is greater than 2 what is the answer

Len [333]

I dont really get it ?

4 0

3 years ago

Read 2 more answers

What are the steps to solve the quadratic equation x^2+4x-6=0

makvit [3.9K]

$METHOD\ 1:\\\\Use:\\\\(*)\qquad(a+b)^2=a^2+2ab+b^2\\---------------------\\\\x^2+4x-6=0\qquad\text{add 6 to both sides}\\\\x^2+4x=6\\\\x^2+2(x)(2)=6\qquad\text{add}\ 2^2\ \text{to both sides}\\\\\underbrace{x^2+2(x)(2)+2^2}_{(*)}=6+2^2\\\\(x+2)^2=6+4\\\\(x+2)^2=10\Rightarrow x+2=\pm\sqrt{10}\qquad\text{subtract 2 from both sides}\\\\\boxed{x=-2-\sqrt{10}\ \vee\ x=-2+\sqrt{10}}$

$METHOD\ 2:\\\\\text{use the quadratic formula:}\\\\ax^2+bx+c=0\\\\\Delta=b^2-4ac\\\\if\ \Delta>0,\ \text{the equation has two solutions}\ x=\dfrac{-b\pm\sqrt\Delta}{2a}\\\\if\ \Delta=0,\ \text{then the equation has one solution:}\ x=\dfrac{-b}{2a}\\\\if\ \Delta$

$x^2+4x-6=0\\\\a=1,\ b=4,\ c=-6\\\\\Delta=4^2-4(1)(-6)=16+24=40>0\\\\\sqrt\Delta=\sqrt{40}=\sqrt{4\cdot10}=\sqrt4\cdot\sqrt{10}=2\sqrt{10}\\\\x_1=\dfrac{-4-2\sqrt{10}}{2(1)}=\dfrac{-4}{2}-\dfrac{2\sqrt{10}}{2}=-2-\sqrt{10}\\\\x_2=\dfrac{-4+2\sqrt{10}}{2(1)}=\dfrac{-4}{2}+\dfrac{2\sqrt{10}}{2}=-2+\sqrt{10}$

7 0

3 years ago

Identify the radius, height, and diameter of the cylinder.

Svetach [21]

Please mark me the braniliest

Answer:

Radius = 12in

Diameter = 24in

Height = 30in

Step-by-step explanation:

Trust me I took the test

5 0

4 years ago

Read 2 more answers

Help<br> Pls ppl that are good in math

3241004551 [841]

It’s a black picture. We can’t help with that

5 0

3 years ago

| 12x +18y=1081 x + y =8​

| 12x +18y=1081 x + y =8