Cada um dos círculos da figura a seguir deverá ser pintado com uma cor, escolhida dentre quatro disponíveis. Sabendo que dois círculos consecutivos nunca serão pintados com a mesma cor, então o número de formas de se pintar os círculos é

In trapezoid efgh, m∠gfe=63∘. identify m∠ghe. !

Giuseppi's pizza had orders for $931.00 of pizzas. the prices were $21 for a large pizza, 514 for a medium pizza, and $7 for a small pizza. the number of large pizzas was two less than four times the number of medium pizzas. thenumber of small pizzas was three more than three times the number of medium pizzas. how many of each size of pizza were ordered?

Find dy/dx using implicit differentiation ln(20+e^xy)=y