Given: ∠a ≅∠d, ∠b ≅∠e m∠c = x, m∠f = 2x−30° find: m∠c this is 2 seperate triangles abc is one triangle and def is a different triangle

Since <A = <D and <B = <E, it must be true that the third angles <C = <F  (the triangles are similar).

If <C = x and <F = 2x-30  then you need to find x for which <C = <F is true:

x = 2x-30

and that holds for x=30

So m<C=30 degrees

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.

step-by-step explanation:

the true statements are:

r = set of real numbers

n = set of natural numbers, 1,2,

w = n u{0} = {0,1,}