MY CART (5)

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price:

There are no items in this cart.
Continue Shopping
                   

solve for x; if


log 7(x3+7)-log7(x+3)=2

4 years ago

Share

Answers : (1)

                                        

log 7(x3+7)-log7(x+3)=2


log(x3+7)/log7 - logx+3/log7 = 2


logx3+7 - logx+3 = 2log7


logx3+7/x+3 = log49


x3+7 = 49x + 49*3


x3 -49x - 20*7 = 0


x3 - 49x - 140 = 0


now solve for x

4 years ago

Post Your Answer

More Questions On Algebra

Ask Experts

Have any Question? Ask Experts
Post Question
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!!
Click Here for details
h
 
there are 12 girls seated in a circular table.they play a game with 12 cards.Initially the girl G has all the 12 cards in her hand.If some girl has atleast 2 cards(more than one card)in her...
 
 
final stage will be such that 6 alternate girls will have 0 cards each and other 6 alternate girls will have 2 cards each and the game goes on and on
 
abhidon3 6 months ago
The solution set of the equation 4 log 9 x -6.x log 9 2 + 8 = 0 is ______.
 
 
We have x log a y = y log a x S, x log 9 2 = 2 log 9 x 4 log 9 x -6.x log 9 2 + 8 = 0 => (2 2 ) log 9 x – 6. 2 log 9 x + 8 = 0 => (2 log 9 x ) 2 - 6. 2 log 9 x + 8 = 0 let 2 log 9 x = y...
 
Y RAJYALAKSHMI 7 months ago
 
thnx
 
Mostafijur Rahaman 7 months ago
Find the greatest term in the expansion of (7-5x)^2 where x=2/3 Please explain the steps. Thankyou in advance.
 
 
Hello Student. Please find the solution (7-5x)^2 = 49 + 25x^2 – 70x so first term = 49 second term = -70*2/3 third term = 25 x^2 = 25*4/9 = 11.11 So 49 is greatest...
  img
Nishant Vora 5 months ago
 
Sorry sir.. i am extremely sorry.. Actually i typed in the wrong question.. it was (7-5x)^11, where x=2/3.. I am extremely sorry once again. Sir please give me the correct answer for this.
 
Swagat Bordoloi 5 months ago
R=(7+4*root3)^{2n}=I+f find R(1-f)
 
 
Hello Student, G=(7-4*root3)^{2n}=Even integer. I+f+G=an even integer. f+G=1=>G=1-f =>R(1-f)=RG=1 Thanks & Regards Arun Kumar Btech, IIT Delhi Askiitians Faculty
  img
Arun Kumar 8 months ago
Is there any way to find out if two lines given in symmetrical form intersect or not? (without using vectors)
 
 
ya we can do dat by equating it to t1 and t2 and then equate x y and z coordinates individually
  img
Nishant Vora one month ago
 
  img
Saurabh Kumar one month ago
 
um...sir what is t1 and t2?
 
Satviki Sanjay Pathak one month ago
Two equal parabolas have their axes perpendicular and have common vertex.find the whic one of them cuts the other.
 
 
*find the angle??a correction in the question ..
 
Jahnavi Svls 8 months ago
View all Questions »