Answer:
Step-by-step explanation:
Given information: |a| = 80, |b| = 50, the angle between a and b is 3π/4.
We need to find the dot product a · b.
The formula of dot product is
where, θ is the angle between a and b.
Substitute the given values in the above formula.
![[\because \cos (\pi-\theta)=-\cos \theta]](https://tex.z-dn.net/?f=%5B%5Cbecause%20%5Ccos%20%28%5Cpi-%5Ctheta%29%3D-%5Ccos%20%5Ctheta%5D)
Rationalize the above equation.
Therefore, the value of a · b is .
Answer:6,051
Step-by-step explanation:1+2+3+2,014+2,015+2,016
Answer:
x= -5/2
Step-by-step explanation:
4 - (2x+4)=5
4-2x-4=5
-2x=5
x=-5/2
Answer:
The total number of people at the stadium is 5,500
Step-by-step explanation:
2% of the fans in attendance were teenagers
if there were 110 teenagers at the football stadium
what is the total number of people at the stadium?
Let x = total number of people at the stadium
2% of x = 110
2/100 * x = 110
0.02x = 110
Divide both sides by 0.02
x = 110 / 0.02
= 5,500
x = 5,500
The total number of people at the stadium is 5,500
<span>each question is worth 4 points because if he missed 5 questions and 5*4 is 20 and 20 minus 100 is 80
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