icdisney05 icdisney05

27-04-2022
Mathematics

contestada

Question 6
The partial sum 1+3+5+...+39 equals =

Respuesta :

sqdancefan sqdancefan

27-04-2022

Answer:

400

Step-by-step explanation:

The 20 terms of the sum can be formed into 10 pairs, each with a sum of 40:

= (1 +39) +(3 +37) +(5 +35) + ... +(19 +21)

= 40 × 10 = 400

The indicated sum is 400.

Answer Link

Otras preguntas

Why does hydrogen peroxide bubble when it is poured on a skin cut

Review Problem. A light string with a mass per unit length of 8.20 g/m has its ends tied to two walls separated by a distance equal to three-fourths the length

Can someone solve these?

Without the wheels, a bicycle frame has a mass of 6.71 kg. Each of the wheels can be roughly modeled as a uniform solid disk with a mass of 0.820 kg and a radiu

If 7a is two times as great as k, then a-k= 1. 7a/2 2. -2/5a 3. -5k/7 4. (2-6k)/7 5. -13a

Why does hydrogen peroxide bubble when it is poured on a skin cut

Hudson Hotel collects 15% in city sales taxes on room rentals, in addition to a $2 per room, per night, occupancy tax. Sales taxes for each month are due at the

why are mustard seeds and groundnut called oil seeds

Rapid defibrillation is a link in the chain of survival. Why is this important to survival

The majority of work done by legislative bodies is performed in committees. True or False