State a true conclusion. 1) if a · b = 0, then a = 0 or b = 0 2) 3x = 0

Step-by-step explanation:

Given : 1) If a · b = 0, then a = 0 or b = 0

             2) 3x = 0

To Solve : State a true conclusion

Solution:

Statement 1 : a · b = 0

The product of two numbers can be be 0 if one of the number is 0

So,in the given statement either a =0 or b = 0

Hence the conclusion is either a =0 or b = 0.

Statement 2 : 3x=0

In this statement , 3 cannot be 0

So, x =0

Hence the conclusion is x must be 0 .

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a

2y+y=5

add 2y and y