I did 25,000 - (-500) = 25,600
I did -500 (negative 500) because it is below the sea level and positive 25,000 because it above the sea level
Answer: yo plug it into desmos its ez
Step-by-step explanation:
Answer:
2) -81t² +16
Step-by-step explanation:
(9t -4)(-9t -4) = (9t x -9t) + (9t x -4) + (-4 x -9t) + (-4 x -4)
= -81t² - 36t + 36t + 16
= -81t² + 16
Answer:
15
Step-by-step explanation:
using the rule of exponents
= 
= 
= 
= 15
Since the -13 has the absolute value signs next to it, the 13 becomes a positive, but there is a negative outside the absolute value, and the negative sign and the absolute value sign cancelled previously, so the expressions is now
-13
The absolute value signs cancel out a negative only inside the signs, not outside, so the negative sign in the outside keeps.
