Find the constant of proportionality (r) in the equation y=rx

Write this number in word form 5,487

Max installed a motion detector on the shed that illuminates a semicircle with a radius of 12 ft. What is the area of the yard that will be lit by the motion detector light? Leave your answer in terms of π.

Solve the equation 9/x-2=18/x+4

Is 4:5 (4/5) less, or greater than 19:30 (19/30) ?

1 Find the slope of a line y = 2x + 4

During a bike challenge writers have to collect various colored ribbons each 1/2 mile they collect the rent with each 1/8 mile they click the green ribbon and each 1/4 mile they collect the blue ribbon which colors of ribbon will be collected at the

If you are one of the first 100 people to join a new health club, you are charged a joining fee of $49. Otherwise, you are charged a joining fee of $149. The monthly membership cost is $38.75. a.

Simplify the expression by combining like terms. 15+12-5+4-7

If the second term of an arithmetic sequence is 5 and the fourth term is 12, what is the 37th term?

SAT scores are normally distributed, with a mean of 1000 and a standard deviation of 200. Approximately 68% of the scores lie between A.) 600 and 1400 B.) 680 and 1680 C.) 700 and 1300 D.) 800 and 1200