4.76 rounded to one decimal place is 4.8
Look at the decimal place you want to round (the 7, since it is the one decimal place).
Then look at the next digit (the 6). If it is 5 or greater, round up. Otherwise, round down.
You round up the 7 up because 6 is 5 or greater.
So you get the answer 4.8
(a)
Given:
is in xy plane and 
is in the direction of k.
|a|=6 units, |b|=3 and θ = 90°
|a × b| = |a| × |b| sinθ
= |a| × |b| sin90°
= 6 × 3 × 1
|a × b| = 18
(b)
Let 
is perpendicular to both 
.
In this case,
x-component of 
is positive.
y-component of is negative.
z-component of is zero.
Answer:
Number 3,4, and 5
Step-by-step explanation:
When expanding brackets, 3rd one expands to 2x +4g
4th one is 4g + 2x so the other way around
When added up, 5 is 2x +4g
Answer:
I'm not 100% sure about these questions but I got
1. 45 students
2. 13.5 students
3. 21 students
4. 2/9=x
