Answer:
9
Step-by-step explanation:
x^2
Let x=-3
(-3)^2
-3*-3
9
Answer:
7/10
Step-by-step explanation:
3/10+2/5=3/10+4/10=7/10
Answer:
Step-by-step explanation:
hello,
for t = 4 hours

this is 205 km
d is differentiable and

and

this is 136 km/h
d' is differentiable and

and

this is 
Answer:
Step-by-step explanation:o
x + y = 10........(1)
x - y = 14..........(2)
Adding (1) and (2)
2x = 24
x = 24/2
x = 12
And x + y = 10.......(1)
12 + y = 10
y = 10 - 12
y = -2
The number are 12 and -2