Nina has 7 blue pens 3 black pens and 2 red pens in her desk drawer. if she selects 3 pens at random with no replacement what is the probability that she will first select a blue pen then a black pen then another blue pen​

Afamily has five members. a mom, a dad, two sisters, & a brother. the family lines up single file. what is the probabillity that the mom is at the front of the line

4. (10.03 mc) the equation of line cd is y = −2x − 2. write an equation of a line parallel to line cd in slope-intercept form that contains point (4, 5). (4 points) y = −2x + 13 y = negative 1 over 2 x + 7 y = negative 1 over 2 x + 3 − 2x − 3

Find all the angles that satisfy the equation cos(θ)=32