Aboat makes a 120-mile trip downstream in 3 hours but makes the return trip in 4 hours. what is the rate of the boat in still water?

a.30 mph
b.32 mph
c.35 mph

The correct answer is C. The rate of the boat in still water is of 35 miles per hour.

Step-by-step explanation:

As the boat makes a 120 mile trip downstream in 3 hours, and the return trip in 4 hours, we can say that it makes an entire 240 mile trip in 7 hours. As 240 / 7 = 35, that is the average speed the boat traveled in still water: the boat's rate in still water was of 35 miles per hour.

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 ..

21.4 i did it already for s1

step-by-step explanation: