forty percent of a radioactive substance decays in five years. by what percent does the substance decay each year

*= dot product L(x)=(x*v1)v2 + (x*v3)v4 where v1=(1,0,2,-1) v2=(1,1,0,0) v3=(1,1,1,1) v4=(0,0,1,1) Find the matrix of the operator L with respect to the standard basis.

Shade 1/3 of the rectangle

Let V be a subspace of r4 spannes by the vectors x1=(1,0,2,2) x2=(1,2,-3,-2) x3=(1,1,-5,0) i)Find a othonormal basis for v ii) find the distance from the point y=(9,9,0,0) to the subspace V

Let A be the matrix ( 101 030 101) Find a matrix C such that C^2=a^2 but c doesnt = +_ A

Consider the following table data x |-1|0|1|3 f(x)|0|1|1|2 Find a Linear polynomial which is the best least squares fit to these data.

480 was reduced to 432 find the percentage

The postal service will accept packages only in the length plus girth is no more than 156 inches. What is the length, the width and the height?

a box has the volume of 570 meters cubed and a surface area of 478 metres squared. what are the length, width and heigth of the box?

which is the largest value 13.05 or 13.5