Friday
April 18, 2014

Homework Help: Mathmatics

Posted by Flamingo on Saturday, April 14, 2007 at 8:39am.

hi


I'm confused with this question

it says

Using a trial and improvement method, slove the following equataions giving your answers to 1 decimal place

a) a squared - 28 = 0
b) a squared - 104= 0
c) a cubed - a = 15


how ?

start with some estimation
28 is a bit larger than 5^2, which would have been 5^2
so try 5.1^2 which is 26.01, too small
try 5.2^2 to get 27.04, still too small
5.3^2 = 28.09, almost dead on.

so to one decimal place a = 5.3

do the same with the other questions.


Using a trial and improvement method, slove the following equataions giving your answers to 1 decimal place

a) a squared - 28 = 0
b) a squared - 104= 0
c) a cubed - a = 15

n.........n^2
5.........25
a.........28
6.........36

(6 - a)/(6 - 5) = (36 - 28)/(36 - 25)

6 - a = 8/11

66 - 11a = 8 making a = 5.272

5.272^2 = 27.79

n.......n^2
5.272..27.79
a.......28
6.......36

(6 - a)/(6 - 5.272) = (36 - 28)/(36 - 27.79) making a = 5.2906

5.29062 = 27.99

Carry it as far as you wish.

Try the others now that you have a method.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

math - factor by the method of using trial factors....2t squared + 4t - 30
quadratic equations - math - Use any method to solve the following equations, ...
Physics(Please help, thanks) - An experiment was done where a tiny steel ball ...
Physics(Please check) - An experiment was done where a tiny steel ball was ...
Math11U - A Pythagorean Triple is a set of integers that satisfy the Pythagorean...
account. question - Is this correct are the steps correct for the accounting ...
geometry - An equilateral triangle has the area of 25 squared root of 3 squared...
math - how do u mutiply decimals and how do u make a decimal into a fraction do ...
college math - Use sets to verify the following answers a. 4+5=9 B. 0+6=6 C. 10...
Math - I need help with this problem. In decimal form, write the ratio of the ...

Search
Members