Answer:
93
Step-by-step explanation:
Line EJ is a straight line, with Line DC cutting through it. So 180 = Angle DCJ + Angle DCE. So Angle DCE = 48. Triangles are equal to 180°. So 180 = ? +39 +48. So ? = 93
Answer:
it is 6
Step-by-step explanation:
Answer:
-15
Step-by-step explanation:
-3 - 2(-6)
-3 -12
-15
Answer:
inches
Step-by-step explanation:
Following what the problem mentions:
"eric is 70 inches tall"

"pablo is as half as tall as eric"


and "annette is 5.25 inches taller than pablo"


Annette is 40.25 inches tall
Answer:
7.5
Step-by-step explanation:
The relation between time, speed, and distance is ...
time = distance/speed
If distance is "1 round trip", then the time going is ...
going = 0.5/(10 mi/h) . . . . for 1/2 round trip
and the time coming is ...
coming = 0.5/(6 mi/h)
Then the average speed for the full round trip is ...
speed = distance/time
average speed = 1/(going + coming) = 1/(0.5/10 +0.5/6) mi/h
= 1/((3+5)/60) mi/h
= 60/8 mi/h = 7.5 mi/h
Jack's average speed for the round trip was 7.5 mph.