15
The A13 connects Santarem to the southward turn of the A2 and the A2 connects Lisbon to the Algarve
Times in Excel can be averaged using the AVERAGE function. So if you have a list of time in the cells from A2 to A13, the function would be: =AVERAGE(A2:A13)
1 and a or sqrt(a) and sqrt(a) or a13/15 and a2/15
5 - a - 1 + c - 6a2 + a2
Cannot be simplified
sqrt(a2 + b2) can't be simplified. Neither can (a2 + b2) .
a(a + 2) = a2 + 2a
a2/a6 = 1/a4
From Warsaw in Poland to Berlin in Germany is about 351 miles, or about 565 kilometres taking E30 (A2 in POLAND, A13 in GERMANY).
a2 + 7a - 8a2 = 6a7 ∴ a2 + 7a - 8a2- 6a7 = 0 ∴ a + 7 - 8a - 6a6 = 0 ∴ 7 - 7a - 6a6 = 0 ∴ 6a6 + 7a - 7 = 0
(a^2+7a-8)/(a^2+6a-7) (original equation) (a+8)(a-1)/(a+7)(a-1) (simplify top and bottom) (a+8)/(a+7) <--answer
(a + 5) (a - 5) = a2 - 25