My question on math. please help me.

89.6 m/min and 5.376 km/hr

Step-by-step explanation:

The first step in any word problem with variables is to fill in the variables that you know. We are given , 0.8 meters. We can plug 0.8 into the given equation to solve for .

We now know two things: Bernard's step length is 0.8 meters and he takes 112 steps per minute. Multiply those two numbers together to find how many meters Bernard will cover in those 112 steps, and there are your meters per minute.

Bernard travels at a speed of 89.6 meters per minute.

Next, we need to convert to kilometers per hour. The conversion for meters to kilometers is to divide by 1000, and if we do that, we come up with a speed of 0.0896 kilometers per minute. Since there are 60 minutes in an hour, we can multiply by 60 to get the distance over an hour:

Bernard travels at a speed of 5.376 kilometers per hour.

I hope this helps!

2

step-by-step explanation:

step-by-step explanation:

given that there are two triangles j'k'l' and jkl>

the former is got by dilating the second one.

when drawn on a grid, (graph paper) coordinates of vertices of first triangle is

(6,12)j, (9,6)k and (12,9)l

side jk has length = distance between j and k

=

side j'k'=distance between j' and k'

=

ie j'k'l' has sides 1/3 of that of corresponding sides of jkl.

hence scale factor of 1/3 is used to get j'k'l'from jkl