Tickets to a concert cost $2 for children, $3 for teenagers and $5 for adults. when 570 people attended

What two criteria are needed for triangles to be similar

What is the equation of a line passing through the point (6,1) and parallel to the line whose equation 3x=2y+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.