Preciso de ajuda. Dois observadores que estão em posições coincidentes com os pontos A e B, afastados
120m entre si, medem simultaneamente o ângulo de elevação de um balão, a partir do
chão, como sendo 30° e 75°, respectivamente, o balão está diretamente acima de um
ponto no segmento de reta entre A e B.

Allie answered 72% of the questions on her math test correctly. if she answered 18 questions correctly, how many questions were on the test?

Does the problem involve permutations or? combinations? do not solve. the matching section of an exam has 4 questions and 7 possible answers. in how many different ways can a student answer the 4 ? questions, if none of the answer choices can be? repeated?

Jordan has $5.37, which he is using to buy ingredients to make salsa. he is buying one red pepper for $1.29 and three pounds of tomatoes. if jordan has exactly the right amount of money he needs, what is the price per pound of the tomatoes? choose the correct equation to represent this real-world problem. solve the equation and verify the reasonableness of your answer. a pound of tomatoes costs .