If a circle has a diameter of 15 inches, can it also have a chord of 20 inches? explain.

No, because the diameter is the largest distance between any two points in the circle, so there is no way we can ever have a chord that is longer than the diameter.

Okay i already have it though

1. 0.3 •4 is the same as 4 groups of 0.32. 7•0.8 is the same as 7 groups of 0.83. it increases by 0.5 every time, so 0.5x4 it increases by 0.9 every time, so 0.9x5. 0.9•12=10.86. 0.47•5=2.35i can finish the next ones in a separate post