Find values of c and d that satisfy each of the following equations. (there may be more than one correct answer.)
1. cd = 0
2. (c − 5)d = 2
3. (c − 5)d = 0
4. (c − 5)(d + 3) = 0

The given equations have no solution.

Step-by-step explanation:

The given equations are

1. cd = 0

2. (c − 5)d = 2

3. (c − 5)d = 0

4. (c − 5)(d + 3) = 0

From the given equations it is clear that left side of equation (2) and (3) are same but right side of the equation are not same, which not possible for any values of c and d.

The second equation is

Using equation (3), substitute the (c-5)d=0 in the above equation.

The above statement is false because we know that .

Therefore, the given system of equations have no solution.

pay attention in your classes and concentrate the best thing you can do to raise your test scores is to pay attention when you're supposed to be learning the material: in class!

take good notes.

do your homework.

use mnemonics and other tricks.

do practice tests.

note: the best i know.