Pl answer this i am
which expression is equivalent to -19 - 11
a.11 -19
b. -19 + (-11)
c. -11 + (19)
d.19 + 11

Mrs. morton has a special reward system for her class. when all her students behave well, she rewards them by putting 3 marbles into a marble jar. when the jar has 100 or more marbles, the students have a party. right now, the the jar has 24 marbles. how could mrs. morton reward the class in order for the students to have a party?

Write an expression that has three terms and simplifies to 4x - 7. identify the coefficient(s) and constant(s) in your expression

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)