maths
posted by k .
how wod i solve the following two eqautions? either exactly or to 3 significant
a)2^x = 5
b)3^x+1 = 7
i know a) is 2.32 and b) is 0.771 but i don't know how to show it out step by step in how i worked it out .
can sum1 plz help me
You have to use logs, and learn how to do that on your calculator.
3^(x+1)=7
x+1= log3 7
Respond to this Question
Similar Questions

mathss
How do i solve the following equations giving the answers either exactly or to 3 significant figures? 
math
what is the vertical and horizontal difference between the two eqautions on a graph? 
math!
what is the vertical and horizontal difference between the two eqautions on a graph? 
math
what is the vertical and horizontal difference between the two eqautions on a graph? 
math please help!! asap
what is the vertical and horizontal difference between the two eqautions on a graph? 
math
use the discriminant to determine whether the following eqautions have solutions that are;two different rational solutions;two different irrational solutions;exactly one rational solution;or two different imaginary solutions x^2=3x6 
Math
1. When four fan coins are flipped what is the probability of getting either exactly two heads of exactly two tails? 
maths
Solve the following differential equation: (1 + x)*(dy/dx) = y where y is a funtion of X solve by the following: A)series expansion B) elemantary method please show working 
maths
Solve the following differential equation: (1 + x)*(dy/dx) = y where y is a funtion of X solve by the following: A)series expansion B) elemantary method please show working 
Chemistry
A voltaic cell utilizes the following reaction: 2Fe3+(aq)+H2(g)→2Fe2+(aq)+2H+(aq). What is the emf for this cell when [Fe3+]= 3.70M , PH2= 0.95atm , [Fe2+]= 7.0×10−4M , and the pH in both compartments is 4.05?