(1 point) find a⋅b if |a| = 2, |b| = 4, and the angle between a and b is −π7 radians.

a·b  = 7.2

Step-by-step explanation:

Given :

IaI = 2; IbI = 4 ,

Using Dot product formula:

a·b = IaI IbI cos

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

options a,b,c are the right answer.

step-by-step explanation:

a linear parent function is always represented as y = x

if we write this function in the form of y=mx+c

⇒

or  

now if we plot a graph we will find these characteristics:

1) y intercept of the graph is zero so its a straight line passing through origin.

2) as we can see in both the forms of function written, values of x and y may be either positive or negative for the positive slope means points on the graph are either in first quadrant or in third one.

3) it's slope is one.

d 25 pi/6

step-by-step explanation:

the diameter is 10 inches

the radius is 1/2 of the diameter or 5 inches

the area of the circle is

a = pi r^2

  = pi 5^2

  = 25 pi

the slice is 60 degrees of the entire circle.

60 degrees out of 360   60/360 = 1/6

the area of the slice is 1/6 of the circle

a slice = 1/6 a circle

a slice = 1/6 * 25 pi