Sobre *trigonometria* caucule o valor da expressão e dê a resposta em grau: 3π 2π π - + 4 3 15 30 me ajudem pfv!

find out the value of b

step-by-step explanation:

answer:

125 yards

explanation:

75+50=125. that is my answer

see attached

step-by-step explanation:

given the function as;

write the equation replacing f(x) with y

form   and fill a table containing values of y with corresponding values of x

you can take a range for   values of x as -3≤x≤3

solving for x=-3

for x=-2

repeat the same procedure to get the values of y for the remaining ,x=-1 to x=3

plot the values of y against values   of x and obtain the following graph

x² + 11x + 18 < 0  

[-11 ± sqrt(121 - 72)]/2 = (-11 ± 7)/2  

solution: (-9, -2)

step-by-step explanation: