18.find the value of x rounded to the nearest tenth. a.15.3 b.12.0 c.11.0 d.5.3

Cross multiply:

6 * 8 = 9*x

48 = 9x

x = 48/9

x = 5.3

The answer is D.

D) x = 5.3 .

Step-by-step explanation:

Given  : Two triangles.

To find : .Find the value of x rounded to the nearest tenth.

Solution : We have given two similar triangle

By the property of similar ratio of sides are equal.

Then,

.

On cross multiplication

6 * 8 = 9 * x .

48 = 9 *x

On dividing by 9 and switching sides.

x = .

x = 5 .33

x = 5.3

Therefore, D) x = 5.3 .

i used to know but i learned it a long time ago sorry

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.