Question

The number 1/(1 + root of 5) lies between the numbers :
a) 1/3 and 1/2
b) 1/2 and 1/root2
c) 1/4 and 1/3
d) 1/5 and 1/4

Answer 1

sqrt(5) lies between 2 and 3 so, 1/(1+sqrt(5)) lies between 1/3 and 1/4.

Answer 2

thomas isn't there any method of finding root 5 without calculator

Answer 3

help me in this one also
The smallest possible integer x, for which 1260x = N^3, where N is a positive number is :
a) 1470
b) 2450
c) 3675
d) 7350

Answer 4

You can try some numbers: 2^2 is 4 so sqrt(5)>2 2.5^2=5.25 so sqrt(5)<2.5. You can get a bit of an idea like that.

Answer 5

oh great
pls help me in this one also
The smallest possible integer x, for which 1260x = N^3, where N is a positive number is :
a) 1470
b) 2450
c) 3675
d) 7350

Answer 6

can someon help me please ?

Answer 7

Yes say kushashwa whats your problem

Answer 8

Tell me

Answer 9

The smallest possible integer x, for which 1260x = N^3, where N is a positive number is :
a) 1470
b) 2450
c) 3675
d) 7350
this is my problem

Answer 10

see what the cube root is of 1260*1470 and 2450*1260 etc. See which is an integer.

Answer 11

Does N have to be an integer?

Answer 12

and one more
If x is smaller then -2 , then \[\left| 1-\left| 1+x \right| \right|\]

Answer 13

is it whole link

Answer 14

In this case: |1+x|=|x|-1
So we get |2+|x||=|x|+2

Answer 15

"is it whole link "
What do you mean?

Answer 16

sorry posted in wron problem but i got the solution thanks