If Jasper installs a floor himself, it will take him 7 hours. Working with Yolanda, it will take them 3 hours. A table showing Rate in part per hour, Time in hours, and Part of Floor Installed. The first row shows Jasper, and has, StartFraction 1 Over 7 EndFraction, 3, and question mark. The second row shows Yolanda and has r, 3, and 3 r.
If they work together, what is the missing value in the table that represents the part of the floor Jasper will install?

StartFraction 1 Over 7 EndFraction times 3.(3)
StartFraction 1 Over 7 EndFraction times r. r
7r
7(3)

250

step-by-step explanation:

step-by-step explanation:

step-by-step explanation:

circumference divided by 3.141592654 then timesthe radius twice

the answer is: d) o, f, and kr.

atomic radius of bromine (br) is 114 pm.

atomic radius of oxygen (o) is 73 pm.

atomic radius of fluorine (f) is 72 pm.

atomic radius of krypron (kr) is 112 pm.

the atomic radius of a chemical element is a measure of the size of its atom.

the atomic radius varies with increasing atomic number, but usually increases because of increasing of number of electrons.

the atomic radius decreases across the periods because an increasing number of protons, because greater attraction between the protons and electrons.