PLS HELPP DUE IN 5 HRS

y=2x−1 5x−4y=1 is (1,1)(1,1) a solution of the system?

Ameteorologist is studying the monthly rainfall in a section of the brazilian rainforest. she recorded the monthly rainfall, in inches, for last year. they were: 10.4, 10.3, 11.7, 11.1, 8.0, 4.4, 2.6, 1.8, 2.5, 4.4, 7.3, 9.5 fill in the missing values in the formula. what is the variance?

The minimum height for riding on the super screaming spinner at the theme park is 52 inches. which of the following expressions shows the height to ride?