Answer:
-1
Step-by-step explanation:
-3-2=-5
4-(-1)=5
-5/5 simplifies to -1
To graph this problem you have to place a point on 20 and go down 5 and go over 2 to the right and do the opposite, (5 up over 2 on the left) and then you just connect the dots.
The aswer would be B because you have to divide a couple numbers to get 20in.
Answer:
4
Step-by-step explanation:
The answer here has to do with order of operations rules (PEMDAS).
–2^4 comes out to -16, because the exponentiation MUST be done first. That gives you 16, which you then preface with the - symbol.
(–2)^4 Here the parentheses make the difference: (-2)^4 requires that we take the 4th power of (-1) and mult. that by the 4th power of 2, which is 16.
So, yes, –2^4 and (–2)^4 are different.
What about –2^3 and (–2)^3?
Again we must do exponentiation first. 2^3 is 8, which we then preface with -. Result: -8. (–2)^3 is equivalent to (1)^3 * 2^3, or (-1)*8, or -8. So these two results are identical.
Perhaps it would help to recall that
-1 = -1
(-1)^2 = 1
(-1)^3 = -1
(-4)^4 = 1
and that this pattern repeats itself after you've written each group of 4 lines.
