Help with ordered pairs

1 answer:

monitta4 years ago

6 0

Change the - to sum
×+-2y=8
the second one to the opposite
and x is 2 and y is 2 so
its 2+2 is 4 and four multiplied by 2 is eight i think well thats what the teacher touht me XD

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in a toy store the ratio of the number of dolls to the number of teddy bears 6:5if the number of dolls are 24 what is the number

ELEN [110]

6:5 to 24:20
thats because 6 to 24 is 4 times so you do 5 times 4 and get 20.

4 0

3 years ago

Read 2 more answers

Which equations are true for x = –2 and x = 2? Select two options x2 – 4 = 0 x2 = –4 3x2 + 12 = 0 4x2 = 16 2(x – 2)2 = 0

Svetllana [295]

The equation $x^{2} -4=0~~and~~4x^2=16$ are true for x = -2 and x = 2.

The given equations are given as:

$x^2-4=0\\\\x^2=-4\\\\3x^2+12=0\\\\4x^2=16\\\\2(x-2)^2=0$

We need to select two equations that are true for x = -2 and x = 2.

<h3>What are the solutions to an equation ?</h3>

The solutions of an equation are the values that satisfy the given equation or make the equation true when substituted for unknowns in the equations.

Example:

x - 2 = 2

Here the solution for x - 2 = 2 is 4 because x = 4 will make the equation true.

4 - 2 = 2

2 = 2

Let's find the solutions for each equation.

$x^2 - 4=0$