2x - 2 < -12 or 2x + 3 > 7
2x < -12 + 2 or 2x > 7 - 3
2x < -10 or 2x > 4
x < -5 or x > 2
T = How tall they are.
Robin = 180
His brother = x cm shorter
T = 180 - x
Answer:
No, those are not the same.
Step-by-step explanation:
Assuming x=2,
-3=2-5 is not the same as -3=5-2
Answer:
use a calculator
Step-by-step explanation:
hope this helps
Answer: C.) 1.12 seconds
Step-by-step explanation:
Hi, to answer this question we have to substitute h=0 (when the rock hits the ground the height above it is 0) in the equation given:
h (t) = –16t2 + 20
Solving for t (time)
0= –16t2 + 20
16t2=20
t2=20/16
t=√1.25 =1.12 seconds (option C)
Feel free to ask for more if needed or if you did not understand something.
