It has become somewhat fashionable to have students derive the Quadratic Formula themselves; this is done by completing the square for the generic quadratic equation ax2 + bx + c = 0. While I can understand the impulse (showing students how the Formula was invented, and thereby providing a concrete example of the usefulness of abstract symbolic manipulation), the computations involved are often a bit beyond the average student at this point.
Answer:x=1/2
Step-by-step explanation:
Answer:
the answer would be B 21.7
Step-by-step explanation:
1,000/40= 25 calculators
1,000/40.30=24.8
she can only buy 24 calculators all together
Answer:
r
Step-by-step explanation:
r
