How many more pieces of mail were handled by the United States Postal Service in 199519951995 than in 196519651965? Express your answer in scientific notation.
Year Approximate number of pieces of mail handled
195019501950 4.5 \cdot 10^{10}4.5⋅10
10
4, point, 5, dot, 10, start superscript, 10, end superscript
196519651965 7.2 \cdot 10^{10}7.2⋅10
10
7, point, 2, dot, 10, start superscript, 10, end superscript
198019801980 1.0 \cdot 10^{11}1.0⋅10
11
1, point, 0, dot, 10, start superscript, 11, end superscript
199519951995 1.8 \cdot 10^{11}1.8⋅10
11
1, point, 8, dot, 10, start superscript, 11, end superscript
201020102010 1.7 \cdot 10^{11}1.7⋅10
11

good luck

Step-by-step explanation:

p ÷ r = tan(x)

step-by-step explanation:

given that there is a figure below shows a right triangle: a right triangle is shown with hypotenuse equal to q units and the length of the legs equal to p units and r units.

graph is missing so i will create the graph as per given information.

the angle between the legs having lengths p units and q units is y degrees. the angle between the legs having lengths r units and q units is x degrees.

now we need to find about what is p ÷ r equal to.

so we can use trigonometric ratio tan(x)=[altitude]/[base] to find the value of p ÷ r, because p is the altitude and r is the base.

p ÷ r=tan(x)

hence final answer is p ÷ r=tan(x).

i believe a. 12x≥120 is the answer