D=distance traveled one way
t=d/s
d/20 + d/30 = 12
3d+2d=60(20)
5d=720
d=720/5 = 144 mi one way
144/20 = 7.2 hrs at 20 mph
144/30 = 4.8 hrs at 30 mph
Hey! Hope that I can help.
To do this, we need to notice the words being used. "More than" means adding on to the quotient of 63 and 9. "Quotient" means to divide 63 by 9 in this problem. Putting this into an expression gives us our answer.
Answer: A) 12 + 63 ÷ 9
The area of your circle is about 500.88
Some backround info needed:
Formula for circumference: C=2(3.14)(r)
Formula for area of circle: A=3.14(r^2)
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First, you need to find the radius of the circle.
Do this by dividing pi and 2 from 79.3.
79.3 / 2 = 39.65
39.65 / 3.14 = about 12.63
The radious of the cirlce is 12.63.
Now find the area:
a = 3.14(12.63^2)
12.63 x 12.63 = about 159.51
159.51 x 3.14 = 500.883066
Round .883 to .88
The answer is A. A fraction can be written as a decimal and a decimal can be written as a fraction
