Sign In Sign Up Ask an AI advisor

ryanez5306

ryanez5306

23.03.2021 •

Mathematics

Factorise
ab+cb+ad+cd

Solved

Show answers

Ответ:

annaebrown4406

23.03.2021

Answer is in the file below

tinyurl.com/wpazsebu

0,0(0 оценок)

Ответ:

yeet74

22.07.2020

समांतर श्रेणी का प्रथम पद a = 2

$t_{13}= 26$

Step-by-step explanation:

माना समांतर श्रेणी का प्रथम पद a और सामन्य अन्तर d है.

इसलिए..

S_6 = 42....(given)

$\therefore \frac{6}{2}\{2a + (6-1)d\}= 42$

$\therefore 3\{2a + 5d\}= 42$

$\therefore \{2a + 5d\}= \frac{42}{3}$

$\therefore 2a + 5d=14...... (1)$

$t_{10} : t_{30}= 1 : 3.....(given)$

$\therefore \frac{t_{10}}{t_{30}} = \frac{1}{3}$

$\therefore \frac{a +9d}{a+29d} = \frac{1}{3}$

3(a + 9d) = a + 29d

3a + 27d = a + 29d

3a - a = 29d - 27d

2a= 2d

a= d...... (2)

समीकरण (1) और (2) से:

$\therefore 2a + 5a=14$

$\therefore 7a=14$

$\therefore a=\frac{14}{7}$

$\therefore a=2$

समांतर श्रेणी का प्रथम पद a = 2

a = d = 2... (समीकरण 2 से)

$t_{13}= 2 + (13-1)2$

$t_{13}= 2 + 12\times 2$

$t_{13}= 2 + 24$

$t_{13}= 26$

0,0(0 оценок)

Ask your question to the AI advisor

Ai-bot is an expert in any field and is the perfect companion for reliable and useful answers and advice on a variety of topics, including science, history, technology, art, sports, health, culture and more.

Ask your question

More tips

F Food and Cooking Experts Name Top 5 Healthiest Teas...
H Health and Medicine Relieving Swelling in Legs: Causes and Ways to Alleviate the Symptom...
S Style and Beauty How to Get Rid of a Bruise: Tips and Tricks...
F Food and Cooking Лечо: вкусное и простое блюдо для любой кухни...

Answers on questions: Mathematics

M Mathematics Please solve this it’s geometry B I have to complete these from summer school...
M Mathematics each person has a 75% probability of going to the chests Tahoe restaurant. you randomly select 50 people use normal approximation to find the probability that at...
M Mathematics In a circle with radius 5.5 cm, what is the arc length of a circle with a central angle measure of 5pi/2 radians? Round your answer to the nearest tenth. 43.2 cm...
M Mathematics The equation SA = 6s2 can be used to calculate the surface area, SA, of a cube with side length s. What is the surface area, in square meters, of a cube with a side...
M Mathematics A dog has a 20 ft leash attached to a corner where a garage and fence meet. When the dog pulls the leash tight and walks from the fence to the garage, the arc the...
M Mathematics Find the value of x in the figure....
M Mathematics What is the area of the circle of the eye ?...
M Mathematics Need Help Need Help Need Help...
M Mathematics Question is the picture...
M Mathematics Three vertices of a square are shown on the grid. y 5 4 3 2 . 1 0 1 x 2 3 4 5 What are the coordinates of the missing vertex? Enter the answer in the boxes....

S Sport S Society and Politics G Goods and services C Cities and Countries A Animals and plants L Legal consultation W Work and Career C Construction and repair H Health and Medicine D Dating, Love, Relationships H Horoscopes, Magic, Divination S Style and Beauty L Leisure and Entertainment S Science and Technology P Photography and Videography A Art and Culture O Other P Philosophy F Food and Cooking B Business and Finance T Travel and tourism F Family and Home A Auto and Moto

Show more

Full access

It will provide effective and fast learning by providing unlimited access to the knowledge base and receiving answers from experts and an AI advisor.

Subscribe

Ask an AI advisor a question

I want advice

ABOUT US

About us
Terms of use
Copyright
Privacy Policy
Cookie policy
Cookie preferences

HELP

Sign Up
FAQ
Security Center

App

Spanish Geography Health Engineering Arts Social Studies Advanced Placement (AP) German SAT History Computers and Technology Physics Chemistry Biology Law Mathematics World Languages French Business Medicine