Just answer 21 for me please I’ll give you brainliest

Lydia collected two sets of data one set of data shows an outlier. which set has an outlier, and which number is the outlier?

Which equation can be used to measure the density of water in a spherical water tank? let w represent the number of water particles within the region.

Apossible wavelength for the color blue is 0.000000492 meter. which of the following is a reasonable estimate for this wavelength for the color blue? a. 5 × 10-6 m b. 5 × 107 m c. 5 × 10-7 m d. 5 × 106 m