Please help with some problems i have :(

[Sara_22]

CALCULATE 5 – 4  3 – 2.


CALCULATE 2⁵ – 2³  2³.




The quotient of 3,2  10⁴ and 6,4  10⁻³. the answer should be in scientific notation



Calculate


All help is greatly appreciated!

 

[lillybeth]

CALCULATE 5 – 4  3 – 2.


CALCULATE 2⁵ – 2³  2³.




The quotient of 3,2  10⁴ and 6,4  10⁻³. the answer should be in scientific notation



Calculate
View attachment 1965

2 *2*2*2*2=32 2*2*2=8

so 32 - 8= 24 and 24*8= ... maybe you can take it from there. so, to put that into scientific notation, just put a decimal point after the first number.


it might be easier to show you in an example-

32,000 in scientific notation is 3.2, because you cancel out the zeros. now, count how many spaces you had to move the decimal. this is how it should look- 3.2* 10 to the 4th power. Hope this was helpful!

 

[Deleted member 4993]

2 *2*2*2*2=32 2*2*2=8

so 32 - 8= 24 and 24*8= ... maybe you can take it from there. so, to put that into scientific notation, just put a decimal point after the first number.

Above is not correct as posted.

Need to follow PEMDAS

(I am assuming . means multiplication. Please do not do that - we use * for multiplication to avoid confusion with decimal point)

2⁵ - 2³ * 2³ → first thing to do here is E(xponentiation) of PEMDAS

= 32 - 8 * 8 → second thing to do here is M(ultiplication) of PEMDAS - prior S(ubtraction)

= 32 - 64 → Now subtraction

= -32

it might be easier to show you in an example-

32,000 in scientific notation is 3.2, because you cancel out the zeros. now, count how many spaces you had to move the decimal. this is how it should look- 3.2* 10 to the 4th power. Hope this was helpful!

.

 

[mmm4444bot]

All help is greatly appreciated!

You can help us by explaining why you're confused. Is there something about the symbols that you have not learned? Please be complete, and do not post lists of exercises without asking questions. Cheers :cool:

 

[lillybeth]

reply to subhotosh kahn

.

um... my . (period) was meant to be a decimal, not a multiplication sign. As you can see, my multiplication signs were used as *.

 

[mmm4444bot]

32,000 in scientifֺic notation is 3.2, because you cancel out the zeros.

I am sure that you did not intent to write that! :cool: