Use s 20 Squareroot 273 T to estimate the speed of sound s

Use s = 20 Squareroot 273 + T to estimate the speed of sound s in meters per second for each Celsius temperature T. Round to the nearest integer. 37 degree C -1 degree C 15 degree C -18 degree C Find the value of each expression. Squareroot (49)^2 Squareroot (169)^2 Squareroot (2.7)^2 -Squareroot (4)^2 Estimate the value of each expression to the nearest integer. Squareroot 5 -Squareroot 4 Squareroot 3 -Squareroot 245 - Squareroot 21 Squareroot 50

Solution

26) s = 20*sqrt(273-1) = 329.85
28) s= 20*sqrt(273-18) = 319.74
30) = sqrt(169)^2 = 169
32)-sqrt(4^2) = -sqrt(16) =- |4|
34) -sqrt(4) = -|2|
36) - sqrt(245) = -7sqrt(5) =-15.65 or -16 ( nearest integr)
39) sqrt(50)=7.07 or 7