Let's check the dot product .
v.w = 5(4)-2(10) = 20 -20 =0
So the dot product is not 20 . And since the dot product is zero, so they are perpendicular.
And the y component of w is 10.
So correct options are first and third .
Answer:
24
Step-by-step explanation:
Let’s write them as numbers
6/1/4
Dividing by 4 means multiplying by its reciprocal.
Reciprocal of a number: Can be found when you switch the positions of the denominator and numerator
So reciprocal of 1/4=4/1=4
Next, we multiply by its reciprocal
6*4=24
Therefore, 6 divided by one fourth is 24.
Answer:
100 km/hr
Step-by-step explanation:
First Leg:
Speed = 60 km/h
Time = 30 min = 0.5 h
1st leg distance = speed x time = 60 km/hr x 0.5hr = 30 km
Second Leg:
Distance remaining = 80 km - 30 km = 50 km
Time = 30 min = 0.5 h
speed = distance / time = 50 / 0.5 = 100 km/hr