ohnny is driving to vacation. He has traveled 540 km over 7 hours. What speed was he traveling? (10 Points) 3, 780 km per hour 77.14 km per hour 0.012 km per hour 7.7 km per hour

Can someone me with my hwplz(only the circled ones)

For each polynomial, determine the degree and write the polynomial in descending order. a. –4x^2 – 12 + 11x^4 b. 2x^5 + 14 – 3x^4 + 7x + 3x^3

Si la base de un triángulo isósceles mide 70 m y el ángulo opuesto a ésta mide 58°; entonces ¿cuánto mide la altura de dicho triángulo? a) 21.87 m. b) 40.01 m. c) 43.74 m. d) 63.14 m.