Evaluate 24-x when x=6. Write the answer as a decimal. Round to the nearest hundredth if necessary.

how would you solve that?

Question

Evaluate  24-x when x=6. Write the answer as a decimal. Round to the nearest hundredth if necessary.

how would you solve that?

ganeshie8 · Answer

plugin x = 6 and simplify

ganeshie8 · Answer

$$\large 24-6$$

micahm · Answer

so i subtract that 24-6

ganeshie8 · Answer

Exactly!

micahm · Answer

but how did you get 24

micahm · Answer

the name of this lesson i am in is Rationals, Irrationals, and Radicals

ganeshie8 · Answer

Okay, could you take a screenshot of the question and attach if psble ?

micahm · Answer

how do you take a screen shot on a PC

ganeshie8 · Answer

http://www.techcreak.com/wp-content/uploads/2014/09/prtsc-take-screen-shot.jpg

ganeshie8 · Answer

press that, then open paint and paste it

micahm · Answer

i press what it told me but nothing happened

amistre64 · Answer

or use the draw feature ....

micahm · Answer

$$\sqrt{24-x}  when  x=6 $$

micahm · Answer

Write the answer as a decimal. Round to the nearest hundredth if necessary.

ganeshie8 · Answer

Oh so you have that radical in the original expression

ganeshie8 · Answer

still the process is same -
simply plug in x = 6 and evaluate

ganeshie8 · Answer

$$\large  \sqrt{24-6}$$

micahm · Answer

A. 1.41
    B.    3
       C.4.24
       D. 9

micahm · Answer

these are what i have to choose from 

A. 1.41
    B.    3
       C.4.24
       D. 9

amistre64 · Answer

which 2 perfect squares does this come between?

micahm · Answer

as in

amistre64 · Answer

as in,  the squart root of 24-6  falls between which 2 perfect squares

micahm · Answer

i have to subtract right and if i do that it gives me 18

amistre64 · Answer

good

now 18 isnt a perfect square,  its an integer whose square root is not an integer  but it falls between 2 perfect squares

can you make a small list of perfect suqares?

micahm · Answer

so 24-6 has two perfect square 
to let you know i need an example i am not that great with math but an example will help me

amistre64 · Answer

24-6 = 18  and we want to know where 18 fits in a list of perfect squares ... 

1^2 = 1
2^2 = 4
3^2 = 9
4^2 = 16
(**)^2 = 18    <------ 
5^2 = 25

amistre64 · Answer

18 fits between 16 and 25,  so the sqrt(18) fits between 4 and 5

amistre64 · Answer

only one of your options is bigger than 4, but less than 5

micahm · Answer

9 is bigger and 3 is less

amistre64 · Answer

so we know the answer aint 9 or 3

micahm · Answer

1.41 is less 4.29 is between 5

amistre64 · Answer

so we should go with 4.29, do you agree?

micahm · Answer

i agree cus it's less then 5 but at the same time it's not larger then 5 
thank very much