Športnik Alen trenira hitro hojo. Če hodi ves čas z enakomerno hitrostjo, prehodi v treh
urah 21 km. Koliko prehodi v eni in koliko v
petih urah?​

Simonne used the following steps to simplify the given expression. 12 - 3(-2x + 4) step 1: 12 + (–3)·(–2x) + (–3)·(4) step 2: 12 + 6x + (–12) step 3: 12 + (–12) + 6x step 4: 0 + 6x step 5: 6x what property of real numbers was used to transition from step 3 to step 4? a. identity property of addition b. inverse property of addition c. associative property of addition d. commutative property of addition

Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie