Answer: The determinant of the coefficient matrix is -15 and x = 3, y = 4, z = 1.
Step-by-step explanation: The given system of linear equations is :
We are given to find the determinant of the coefficient matrix and to find the values of x, y and z.
The determinant of the co-efficient matrix is given by
Now, from equations (ii) and (iii), we have
Substituting the value of y and z from equations (iv) and (v) in equation (i), we get
From equations (iv) and (v), we get
Thus, the determinant of the coefficient matrix is -15 and x = 3, y = 4, z = 1.
Multiples of 5 : 65,70,75,80,85,90,95,100,105
multiples of 6 : 66,72,78,84,90,96,102
multiples of 10 : 70,80,90,100
she could choose : 90...and thats it
Answer:
The surface area of the structure is 
Step-by-step explanation:
we know that
The surface area of a sphere is equal to
In this problem we have
-----The radius is half the diameter
substitute
Try adding the two and think of it mentally as if you were drinking the amount of cups of water that's what I do when I have questions like these :))
For this case we can find the volume and area of the cone:
Where:
V: It's the volume
A: It's the radius of the base
h: It's the height
We have to:
Substituting:
On the other hand, the area of the cone is given by:
Where:
A: It's the radio
g: It is the generator of the cone.
SW:
Answer:
