Answer:
x = 18
Step-by-step explanation:
y = x + 8
2x + y = -10
Add 10 to 8, then subtract x from 2x leaving you with one x, and finally subtract y from y leaving you with X = 18
Answer:
-12x²-25x+13
Step-by-step explanation:
First open parenthesis.
(3 − 13x − 7x²) − (5x² + 12x − 10)
3 − 13x − 7x² − 5x² - 12x + 10
Now combine like terms.
3 − 13x − 7x² − 5x² - 12x + 10=13-25x-12x²
Now put into standard form, exponents greatest to least.
-12x²-25x+13
Hope this helps!
If not, I am sorry.
The cube rude of 64 is 4.
When the x-differences are all constant, then the y-differences (or first differences) are useful in telling if a set of data is nearly linear or not.
The power is 2 because the numbers of both numerator and denominator are multiplied in double that is 8*8 = 8^2 = 64 and 9*9 = 9^2 = 81