Maria has a paper route with 100 customers. She delivers a paper to each customer once a week. Each week she is paid $25.00 plus an additional $0.05 for each paper she delivers.
Maria wants to buy a phone that costs $230.00, including taxes. How many weeks will it
take Maria to earn enough money to buy the phone?

9

Step-by-step explanation:

25x9 = 250+ tax

then, the surface area of the sphere shown in the image is: 256π sq. units!

step-by-step explanation:

the lateral surface area of a sphere is 2πrh where h=2r.

then:

surface area = 4πr^2.

in this case, r=8 units ⇒ surface area = 4π(8 units)^2. = 256π sq. units!

then, the surface area of the sphere shown in the image is: 256π sq. units!

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.