Solve for x y=7x-7z-9
a)x=y-7z-9/7
b)x=y+7z+9/7
c)x=y+z+9/7
d)x=y-z-9/7

Use the multiplier method to incrases £258 by 43%

Atoy company is considering a cube or sphere-shaped container for packaging a new product. the height of the cube would equal the diameter of the sphere . compare the volume to surface area ratios of the containers. which packaging will be more efficient? for a sphere, sa =4πr²

Identify the number as a rational or irrational.explain. 127