kyleescott6148 kyleescott6148
  • 02-01-2018
  • Mathematics
contestada

What is sn for the arithmetic series with a1=3 an=-38 and n=8?

Respuesta :

anchitthawi
anchitthawi anchitthawi
  • 02-01-2018
Sn = n/2 (a1+an)
= 8/2 (3-38)
= 4 (-35)
= -140
Answer Link

Otras preguntas

what is the volume of a cone with a radius of 12 and a height of 8?
find the Midpoint M of the segment joining the points S=(-7,-8) an T= (3,-4)
3. How many atoms in 3.91 moles of sodium?
what was the result of the supreme court's ruling that segregation in public schools was illegal A all children could not attend the same schools. B all childr
The voltage drop across an LED is 2 Volts. It is connected to a 5 volt power supply with a resistor, as shown. What resistor value should be used to set the LED
What is a conjugate acid-base pair?
pls help ASAP! will mark brainliest for correct answer
In the figures below, there are four copper wires shown. Assuming that all the wires are the same temperature, which has the greatest resistance?
Tony is watching a bird feeder on Monday and sees a chickadee take four seeds and a cardinal take six seeds. On Tuesday, Tony sees the chickadee take eight seed
square root of 7 hole 18/49​