Choose the system of equations which makes the following graph: a) 3x + 5y = -25 x - 5y = 5 b) 3x + 5y = -25 x + 5y = -5 c) 3x - 5y = 25 x + 5y = -5 d) 3x - 5y = 25 x - 5y = 5

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.

What number line represents the solution set for the inequality -1/2 greater than or equal to 4

Scores on the cognitive scale of the bayley-scales of infant and toddler development range from 1 to 19, with a standard deviation of 3. calculate the margin of error in estimating the true mean cognitive scale score, with 99% confidence, if there are 12 infants and toddlers in a sample.