Q: What is the 32nd term of the arithmetic sequence where a1 13 and a13 -59?

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a7/a10 = a10/a13 = 1/r3 where r is the common ratio. So a7 = (a10)2/a13 = -81/72 = -9/8

It all depends where those 36 miles are, and hence what roads will be used and the traffic conditions (which are often based on time of day, and which day it is). For example, yesterday it took about 70 mins for me to drive my "company car" (a 71 seater, double decker coach) the first 36 miles from base to pickup (in London) towards the destination (on the coast). Later in the day I covered 36 miles in about 55mins (on the return, with a lot of that on the A13). Driving from Birmingham to London a few weeks ago (in the same vehicle) I covered 36 miles in about 35 minutes along the M40.

Related questions

Suppose the sequence is defined by an = a0 + n*d Then a1 = a0 + d = 15 and a13 = a0 + 13d = -57 Subtracting the first from the second: 12d = -72 so that d = -6 and then a0 - 6 = 15 gives a0 = 21 So a32 = 21 - 32*6 = -171

a7/a10 = a10/a13 = 1/r3 where r is the common ratio. So a7 = (a10)2/a13 = -81/72 = -9/8

The A13 connects Santarem to the southward turn of the A2 and the A2 connects Lisbon to the Algarve

520 kilometres taking this route:Head out of Venice to the AUTOSTRADA. Follow signs to A13 BOLOGNA (via A4 MILANO).Once you are on A13, follow A13 to A1 FIRENZE in Bologna. Follow signs to A1 FIRENZE via A14.Take A1 to ROME.

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)

355 km on the A13.

370 km taking this route:Follow A4 MILANO, from Venezia, to A13 BOLOGNA at the junction near Padua.Take A13 to A14 ANCONA.Take A14 to Ancona.

730 kilometres (453 miles) taking this route:Take A4 VENEZIA, from Vicenza, to A13 BOLOGNA.Take A13 to A1 FIRENZE.Take A1 to Napoli.

100 km taking A13.

63 is composite

Oil Change

14 miles taking this route:Start off on RING ROAD A501 (Marylebone Road) towards THE CITY. Take the RING ROAD around to A13. FOLLOW SIGNS to A13 to the DOCKLANDS.Take A13 across to A406 N. CIRCULAR towards ILFORD and M11.Take A406 to Ilford.