Which of the following trigonometric ratios are correct? b
40°
cos 40º =
등
b
cos 40º = 2
X
b
sin 40°
X
sin 40° = x
1/4 등
b.
b
tan 40º =
X
X
tan 10°
a

The customer price index(cpi), which measures the cost of a typical package of customer goods,was 208.8 in 2011 and 244.1 in 2016.let x=11 corresponding to the year 2011 an estimate to cpi into 2013 and 2014. assume that the data can be modeled by a straight line and the trend to continue idenfinitely.use data points to find such a line and then estimate the requested quantities

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

The ratio of the height of two similar cylinders is 4 to 3 what is the ratio of their volumes