I Need help with 10 questions, Pictures/Screenshots will be posted below. Need help asap! Im 23 lessons behind in school, math being 5 because of this.

Question

anonymous · Answer

attachment

anonymous · Answer

That's a lotta questions. 

Hm. For Math.png - A good statement is like a function. It doesn't matter what you put in; every time you test it, you get a good result back. If you find a counterexample, you dismantle the conjecture. Choose counterexample.

anonymous · Answer

For the second question in Math.png, choose the third choice. Here you are given the conditional: If you join, then first three months are free. So, logically, if you join the gym, you must have three free months. 

None of the other answers can be correct because they fail to take so much into account: why MUST you have joined a gym if 'the first three months are free' for...well, any other program? Reasoning like that will disprove the other choices.

anonymous · Answer

For Math 2, the first question's statement is not reversible. Yes, all linear pairs of angles add up to 180. But are all angles that add up to 180 linear? No.

anonymous · Answer

The second question's third choice is heavily flawed, and is not a true bi-conditional!

A whole number is even if AND ONLY IF it is divisible by 2. 

This implies that:

A whole number is not even if it is divisible by 4, or 6, or 8, or 10.

The 'and only if' destroys the statement.

anonymous · Answer

For Math 3, first question, I think the third choice is the answer.

anonymous · Answer

For the second question, 

If RS + ST = RT, then:
   RS = RT - ST.

That's the second choice.

anonymous · Answer

For Math 4, first question, all ya gotta know is that the Addition Property of Equality just means that if you add something to one side, then you have to add that something to the other side, in order to balance things out. 

So if a = b, and you add x to a, then you have to balance out the equation by adding x to b. So a = b becomes: 

a + x  =  b + x

So the second choice, p + s  =  q + s, is true.

anonymous · Answer

attachment

anonymous · Answer

That's for the second question.

anonymous · Answer

That's for Math 5, first question. Um, you might have to rotate it to see it better. ^_^

anonymous · Answer

For the last question, when you see x = y, then y = x, or p = q, then q = p, you're seeing the symmetric property of equality.

anonymous · Answer

^_^ 

Happiness. 

If I at all said something that may be incorrect, please feel free to call me out on it, and I will investigate the issue. 

Rock on!!!