Density of the cube is 9.86 g/cm³ and the volume is 150cm³ work out the mass in kg

Which expression calculates the speed in meters per second of an object that travels a distance of 100 m every 20 seconds

Assume that 1400 births are randomly selected and 1378 of the births are girls. use subjective judgment to describe the number of girls as significantly high, significantly low, or neither significantly low nor significantly high. choose the correct answer below. a. the number of girls is neither significantly low nor significantly high. b. the number of girls is significantly high. c. the number of girls is significantly low. d. it is impossible to make a judgment with the given information.

What is the value of x when x + 7 = 21?