Answer:
a·b = 7.2
Step-by-step explanation:
Given :
IaI = 2; IbI = 4 , ![\theta = -\pi/7](https://tex.z-dn.net/?f=%5Ctheta%20%3D%20-%5Cpi%2F7)
Using Dot product formula:
a·b = IaI IbI cos ![(\theta)](https://tex.z-dn.net/?f=%28%5Ctheta%29)
a·b = (2) (4) (cos(-\pi/7[/tex])
a·b = 7.2
Hence Dot product of vector a and b i s:
a·b = 7.2
A..because look at the number....the 100ths collem is 2 and the next number is 4....and 1-4 round down...so this number Obhiously would be A
Answer:
Each side of the square in centimetres = 10.80 centimetres
Step-by-step explanation:
To convert from one unit to another or in between units we make use of conversion factors or conversion formulas
The conversion factor for the conversion of units in centimetres to units in inches is given as about 2.54 centimetres being equivalent to 1 inch
Therefore;
1 inch = 2.54 centimetres
4.25 inches = 2.54 × 4.25 = 10.795 ≈ 10.80 centimetres
Therefore, each side of the square in centimetres = 10.80 centimetres.
This equation is a linear equation. They form straight lines. In this case, the line goes through the origin of a cartesian plane. It can be rewritten as
y = 2/5x.
The graph looks like this: