Draw a perpendicular segment from point C to the midpoint of AB. Using the trig sine function sin 80 = x/6 which gives 5.91 for the perpendicular segment. Using the formula A=1/2bh, A= 1/2 x5.91x2sqrt 2 A= 8.4
First we convert it in seconds.
Number of seconds in 1 minute = 60 seconds
Therefore,
Number of seconds in 4.2 minutes = 4.2 x 60 = 252 seconds.
Next we convert it in hours.
60 minutes make up an hour. So we can write,
Number of hours in 60 minutes = 1 hour
Number of hours in 1 minute = 1/60 hour
Number of hours in 4.2 minutes = 1/60 x 4.2 = 0.07 hour
Therefore, the video is 252 seconds or 0.07 hour long.
Question 2: peaceful protests without violence
Answer:
x = 10 and y = 2
Step-by-step explanation:
multiply first equation by 5 and 2nd equation by 3 then subtract equation 1 and 2, we get,
10x+15y= 130
9x+15y=120
( -) (-) (-)
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x= 10
substituting the value of x in equation 1 we get
2x + 3y = 26
2*10 + 3y = 26
3y = 26-20
y =6/3
y= 2.i hope this helps