In recent year a letter to europe from the united states cost $0.94 to mail. a letter mailed within united states cost $0.44. nancy mailed 5 letters for $3.70 some to europe and some to the united states. how many letters did she send to europe

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

`if you have a set of parallel lines a and b cut by transversal x, if angle 1 = 167 degrees, what is angle 4 and why. also what is the measure of angle 5 and why? you need to use the names of the angle relationship and explain. ''.

On the first of each month sasha runs a 5k race she keeps track of her times to track her progress her time in minutes is recorded in the table