Answer:
when adding you just line the decimals up like this, let's say you had to add 1 to 2.58.
2.58
+ <u> 1 .00</u>
3.58
when multiplying you might have to move it, say you had to multiply 1.5 by 2.2. (you don't have to line up the decimals like with addition)
1 .5
<u> </u><u>×</u><u> 2.2</u>
30
<u> </u><u>+</u><u> 300</u>
3.30
1.5 has one decimal place and 2.2 also has one decimal place so you put those 2 decimal places in your answer.
sorry if this is a bit confusing lol
Answer:
4x-105
Step-by-step explanation:
The answer is 4x-105 because you do cross multiply with (x+7)(x-3) and that answer is (2x-21) then you multiply (4x-21)(2x+5) and the overall answer is 4x-105.
Answer:
-(13 w + 7)
Step-by-step explanation:
Simplify the following:
-6 w - 8 + 1 - 7 w
Grouping like terms, -6 w - 8 + 1 - 7 w = (-6 w - 7 w) + (1 - 8):
(-6 w - 7 w) + (1 - 8)
-6 w - 7 w = -13 w:
-13 w + (1 - 8)
-8 + 1 = -7:
-13 w + -7
Factor -1 out of -13 w - 7:
Answer: -(13 w + 7)
Your inverse will be x = -1 .
I think for me is that 1 and 2 answer yeah