3)
a) incenter
b) angle bisectors
c) the incenter is equidistant from the sides of the triangle
d) ???
2)
a) orthocenter
b) altitudes
c) the distance from the vertex to to the orthocenter is two-thirds the length of the altitude
d) ???
1)
a) circumcenter
b) perpendicular bisectors
c) the circumcenter is equidistant from the vertices of the triangle
d) ???
If Bob can paint the fence in 4 hours, then in 1 hour he gets 1/4 of the fence painted. If Sarah can paint the fence in 2.5 hours, then she gets 2/5 of the fence painted in one hour (1/2.5 = 2/5). We add those amounts together and set them equal to 1/x, x being the the total time it will take them to paint the whole fence. 1/4 + 2/5 = 1/x. Find a common denominator first, then add the left side together. 5/20 + 8/20 = 1/x. 13/20 = 1/x. Cross-multiply to get 13x = 20 and x = 1.54 hours, just a bit over an hour and a half.
let L be <span>Lissette's age
and F </span><span>Francesca age
2 F - 3 = 13
2F= 16
F = 16/2 =8
</span>
6 times 8=48/2=24 cm squared
You divide by two because there are two triangles in a square.
