Answer:
A. x-9 and x+9 because these are perfect squares. 9 times -9 is -81. x times x is x^2. 9 + -9 is 0
The answer has something to do with volume.
Don't really need to post the options to know what the expression(s) should look like.
"Sum of" tells you its addition and because it's addition the order of the two terms (the 3 and the N) don't matter.
Your correct expressions are:
3 + n
or
n + 3
Answer:
PETER 18
POL 21
MARY 26
Step-by-step explanation:
I dont know if I did in the right way...
1st: Take any number for peter's or pol's age
I took 18 for peter, RANDOMLY
2nd: Subtract the age from the total to get pol's age
39-18=21 Hence, pols age is 21
3rd: Subtract peter's age from the total to get marys age
47-18=26 Hence, Marys age is 26
4th: Add the age of pol and mary
aaand, you get 47
Done!
Hope it helps!!!
Answer:
Money Ivan gets extra = 120 - 30 (or 3x) = 90
Step-by-step explanation:
Ivan = 4x
Tanya = 1x
Total = 150
4x + x = 150
5x = 150 ; x = 150 / 5 = 30
Ivan = 4x = 120
Tanya = 1x = 30
Money Ivan gets extra = 120 - 30 (or 3x) = 90
