100+16=116 is the right answer
Answer:
Average velocity is 32 miles/hr.
Step-by-step explanation:
Given that a particle moves on a line away from its initial position so that after t hours it is
miles from its initial position.
We have to find the average velocity of the particle over the interval [1, 4].
As, average velocity is the change is position over the change in time.


∴ 
=
Hence, average velocity is 32 miles/hr.
Answer:
A
Step-by-step explanation:
he actually made a mistake in second step. Step 2 should be: 10y-2=18 and then 10y=18+2
we get 10y=20 /:10
y = 2
Answer:
√74
Step-by-step explanation:
there is no y.
wx=<8-3,-3+3,-6-1>=<5,0,-7>
|wx|=√(5²+0²+(-7)²)=√(25+49)=√74