The area of the triangle is 15.75. The height is 9 units.

What is the length of the base?

3.5

Step-by-step explanation:

area of the triangle = 1/2 × base × height

so to find the base of triangle = 2 × area divided by the height

area is given = 15.75

and height = 9

so base = 2 × 15.75 divided by 9

base = 3.5

i think the answer is seven, for if i'm being useless °ω°

step-by-step explanation:

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.