Consider the following three systems of linear equations. System A System B System C 13x = 39 [81] x=3 [C1] - 5x – 4y = 9 [A1] 9x +2y = 15 [A2] 9x + 2y = 15 [B2] 9x +2y = 15 (C2] Answer the questions below. For each, choose the transformation and then fill in the blank with the correct number. The arrow (-) means the expression on the left becomes the expression on the right. How do we transform System A into System B?

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.

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a

hello umm i don't understand your question can you explain it more pls

step-by-step explanation:

3.73 * 10^7 is the anser for ttm ur welcome < 3

step-by-step explanation: