Carl can type 1800 words in 15 minutes. How many words can he type in 2 hours?

14400 words

Step-by-step explanation:

1 hour = 60 minutes

2 hours

= 2 x 60

= 120 minutes

Let the no. of words that he can type in 2 hours is " x ".

1800 : 15 : : x : 120

1800 / 15 = x / 120

1800 * 120 = 15 * x

x = 1800 * 120 / 15

= 120 * 120

x = 14400 words

Therefore,

He can type 14400 words in 2 hours.

last option: rhombus or kite

step-by-step explanation:

a kite and rhombus have the same shape. as we don't have any specific formula for the calculation of area of kite. the diagonals are used to calculate the area of a kite or rhombus.

the formula for area of rhombus is given by:

here, d_1 is the first diagonal and d_2 is the second diagonal.

so,

last option is the correct answer ..

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.