02 goes into 78 (39) times!
A.) a right triangle would have 2 acute angles.
b.) there would be 0 obtuse angles.
c.) there would be 1 right angle.
In the diagram you can see a little black box in one of the corners of the triangles. That box means the angle is a right, 90 degree angle. Since an acute angle is an angle that is less than 90 degrees, and since all three angles would have to add up to 180 degrees, you know that the other two angles are acute angles.
4 legged tables : x
3 legged stools : y
x + y = 20 y= 20 - x
4x + 3y = 68
Replace y by 20 - x so we only have one letter
4x + 3(20 - x) =68
4x + 60 - 3x =68
x + 60 = 68
x = 8
To find y replace x by 8
y = 20 - 8
y = 12
So you have 8 four legged chairs and 12 three legged stools.
Hope I helped!
100 because 40% is 40 and you do not kno the exact number of apples
2x2x1= 4 possible ways
GBP & BPP & BB
GBP & RPP & BB
YBP & BPP & BB
YBP & RPP & BB
GBP is green backpack, YBP is yellow backpack, BPP is blue pencil pouch, RPP is red pencil point, BB is black binder.
