Multiply 80 by .45 to get the number that are pop.
80 x 0.45 = 36
That means 36 of the songs are pop.
Hope this helps!
Answer:
if the height is h and the base is 2b
then we have:
½(2bh)=60→2bh=120
b²+h²=13²=169
so
(b+h)²=b²+h²+2bh=120+169=289
(b-h)²=b²+h²-2bh=169-120=49
so
b+h=17
|b-h|=7
so b can be 12 and h can be 5
or b can be 5 and h can be 12
which means the base is either 24cm or 10cm
First keep in mind that the center is 5 inches...let L and R be the left and right positions of the two flames...
L=h and R=10-1.5h where h is in hours....
The two flames meet when L=R so we can say:
h=10-1.5h add 1.5h to both sides
2.5h=10 divide both sides by 2.5
h=4
So the flames will meet in five hours, using either original equation we can find this position, I'll use L=h..
L=4
So the position of the flames is 4" from the end. The questions ask how far this point is from the center so:
5-4=1"
So the flames meet 1 inch from the center.
