Larry recorded his time as he ran. What was his average speed from hour 2 to hour 4? 6.75 mph 7 mph 13.45 14 mph What was his average speed from hour 4 to hour 7? 5 mph 7 mph 9.7 mph 21 mph Did he speed up or slow down? speed up slowed down stayed the same time elapsed(hr) distance run (mi) 2 13.5 4 27.5 7 48.5

1. 7mph;

2. 7mph

3. Stayed thesame

Step-by-step explanation:

Average speed = Distance/Time

1. What was his average speed from hour 2 to hour 4?

Speed = Distance/Time

Speed = (27.5 - 13.5)/(4 - 2)

Speed = (14/2)

Speed = 7mph

2. What was his average speed from hour 4 to hour 7?

Speed = Distance/Time

Speed = (48.5 - 27.5)/(7-4)

Speed = (21/3)

Speed = 7mph

3. Since the speed are thesame, he stayed thesame.

given that triangle abc is transformed two times to get triangle

a"b"c"

first abc is transformed in to a'b'c' as follows:

the coordinates of a are (1,-1) and transformed into a'(-1,1)

similarly b (4,-2) became b'(-4,2) and

c(7,-2) became c'(-7,2)

i.e. (x,y) becomes (-x,-y)

this is nothing but reflection about a point here origin.

thus first transformation is reflection on the origin.

next is exactly shifting 3 units down

source:

answer: the first one

step-by-step explanation: use a calculator and divide the minutes by the dollars.