Answer: B The number 6 up 7 times out of a total of 40 trails.
Step-by-step explanation:
Answer:
30 for the first one
Step-by-step explanation:
1) 10.542cm
2) 24cm
3)The image is cut
4)22.165
5)11.124cm
Answer:
1
Step-by-step explanation:
y= 4x+?
points on the graph
(-1, -3) and (1, 5)
-3= -1*4+?
5= 1*4 +?
Verified by second point
Answer:
Return trip travel time: 7h
Step-by-step explanation:
Let d be the distance.
Index 1 refers to initial trip, index 2 refers to the return trip.
v1=70mi/h
v2=40mi/h
t2=t1+3h, or t1=t2-3h (travel times)
d=v1×t1=v2×t2
v1×(t2-3)=v2×t2
v1 t2 -3 v1=v2 t2
v1 t2 - v2 t2=3 v1
t2(v1-v2)=3v1
t2=3v1/(v1-v2)
Or
t2=3×70/(70-40)=3×70/30=7h