Answer:
C 117
Step-by-step explanation:
<2 = 63
<4 = <2 vertical angles
<4 + <7 = 180
63 + <7 = 180
subtract 63 from each side
<7 = 117
I’m having a hard time understanding your question
Let V, be the rate in still water and let C = rate river current
If the boat is going :
upstream, its rate is V-C and if going
downstream, its rate is V+C,
But V = 5C, then
Upstream Rate: 5C - C = 4 C
Downstream rate: 5C+C = 6C
Time = distance/Rate, (or time = distance/speed) , then:
Upstream time 12/4C and
Downstream time: 12/.6C
Upstream time +downstream time:= 2h30 ' then:
12/4C + 12/.6C = 2.5 hours
3/C + 2/C = 5/2 (2.5 h = 5/2)
Reduce to same denominator :
5C = 10 and Rate of the current = 2 mi/h
Answer:
Area: 7850 square cm
Perimeter: 314 cm.
Step-by-step explanation:
The area is
. With r=50,
=2500π which is about (2500)(3.14)=7850.
The perimeter is
which is the same as (diameter)(π). The diameter is 100, so
which is about (100)(3.14)=314.
Answer:
it is 2 and 6 (D)
Step-by-step explanation:
same side , same angle , something like that can help you remember which ones are corresponding