Which of the following has a single line of symmetry? a. semicircle b. regular pentagon c. human hand d. equilateral triangle

Solve 2x+y=3 x+y=5 in substitution method

Write the equations in logarithmic form 7^3=343

Is the response to the survey question "did you smoke in the last week question mark "response to the survey question "did you smoke in the last week? " a discrete random variable, a continuous random variable, or not a random variable?