Spencer has already taken 4 quizzes during past quarters, and he expects to have 5 quizzes during each week of this quarter. How many weeks of school will Spencer have to attend this quarter before he will have taken a total of 49 quizzes? _weeks
HELP:')

9 weeks

Step-by-step explanation: 5 times 9 = 45. 45 plus 4 = 49

spencer will have 9 quizzes

Step-by-step explanation:

step-by-step explanation:

options

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.