What substitution should be used to rewrite 6(x + 5)2 +5(x + 5) -4 = 0 as a quadratic equation?
u = (x + 5)
u = (x - 5)
u = (x + 5)2
u = (x - 5)2
mark this and return
save and exit
next
submit

Abike shop sells you a bicycle for $63 and a helmet for $21. the total cost is 150% of what the shop spent originally. how much did the shop spend originally? how much profit did the bike shop earn by selling the bicycle and helmet to you ?

Solve the triangle. a = 21°, c = 105°, c = 5

Acircle has a circumference of 7.850 units. what is its radius?