maths help (3 Viewers)

[fishy89sg]

Re: maths help needed ASAP

if you havent already, just sketch the graphs

its much easier

 

[tacogym27101990]

Re: maths help needed ASAP

if you havent already, just sketch the graphs

its much easier

only if your a relatively accurate graph drawer
i prefer to do it algebraically

but depends on what you prefer

 

[fishy89sg]

Re: maths help needed ASAP

only if your a relatively accurate graph drawer
i prefer to do it algebraically

but depends on what you prefer

you don't need a graph drawer to sketch y = tan(x-60)... it just the normal tan curve shifted right 60 degrees..... unless......

 

[bubblesss]

ASAP help!!!!!!!!!!!!!!!!!!!!!!!!!!11

hey guys
maths help
1) josh invests $1000 in a term deposit 3.5% per annum compounded annually. what is the value of the investment at the end of 20 years?
2) we know that 2^10=1024, so that 2^10 has 4 digits. how many digits are there in 2^1000 when written as a numeral?
3)[a-5] = [2-2a] i know how to do this but i dont know how to show the relevant working. can someone please show me the full working?
thanks in advance guys. any help is much appreciated.
[ ] is the modulus/ absolute value.

 

[lyounamu]

Re: ASAP help!!!!!!!!!!!!!!!!!!!!!!!!!!11

hey guys
maths help
1) josh invests $1000 in a term deposit 3.5% per annum compounded annually. what is the value of the investment at the end of 20 years?
2) we know that 2^10=1024, so that 2610 has 4 digits. how many digits are there in 2^1000 when written as a numeral?
3)[a-5] = [2-2a] i know how to do this but i dont know how to show the relevant working. can someone please show me the full working?
thanks in advance guys. any help is much appreciated.

1)

A = p(1+r)^n
= 1000(1+0.035)^20 = 1989.78886...

Can you re-write the Q2 & 3? They are quite vague in a sense.

 

[bubblesss]

Re: ASAP help!!!!!!!!!!!!!!!!!!!!!!!!!!11

1)

A = p(1+r)^n
= 1000(1+0.035)^20 = 1989.78886...

Can you re-write the Q2 & 3? They are quite vague in a sense.

thanx but could u explain that formula for me

and ive edited 2 and 3.

 

[lyounamu]

Re: ASAP help!!!!!!!!!!!!!!!!!!!!!!!!!!11

thanx but could u explain that formula for me

and ive edited 2 and 3.

The formula is the compound interest formula given as:

A = p(1+r)^n where A = invested money + interest and p = invested money and r is the rate and n = number of years/months

 

[x.Exhaust.x]

Re: ASAP help!!!!!!!!!!!!!!!!!!!!!!!!!!11

A - Amount invested w/ interest
P - Payment or sum of money deposited
r - Rate (expressed as a percentage)
n - Time

 

[Finx]

Re: ASAP help!!!!!!!!!!!!!!!!!!!!!!!!!!11

3)[a-5] = [2-2a] i know how to do this but i dont know how to show the relevant working. can someone please show me the full working?

a-5 = -2+2a
-a = 3
a = -3

a-5 = 2-2a
3a = 7
a = 7/3

.'. a = -3 or 7/3

 

[bubblesss]

Re: ASAP help!!!!!!!!!!!!!!!!!!!!!!!!!!11

thnxx
can someone do q 2 and 3
its a HSC past question 2 unit.

 

[lyounamu]

Re: ASAP help!!!!!!!!!!!!!!!!!!!!!!!!!!11

hey guys
maths help
1) josh invests $1000 in a term deposit 3.5% per annum compounded annually. what is the value of the investment at the end of 20 years?
2) we know that 2^10=1024, so that 2^10 has 4 digits. how many digits are there in 2^1000 when written as a numeral?
3)[a-5] = [2-2a] i know how to do this but i dont know how to show the relevant working. can someone please show me the full working?
thanks in advance guys. any help is much appreciated.
[ ] is the modulus/ absolute value.

b) 301 numbers.

c)

[a-5] = [2-2a]
a-5 = 2-2a or a-5 = 2a - 2
3a = 7 or a = -3
a= 7/3 or a=-3

Check each solution: when a=7/3, LHS = RHS
when a = -3, LHS = RHS

 

[bubblesss]

Re: ASAP help!!!!!!!!!!!!!!!!!!!!!!!!!!11

b) 301 numbers.

c)

[a-5] = [2-2a]
a-5 = 2-2a or a-5 = 2a - 2
3a = 7 or a = -3
a= 7/3 or a=-3

Check each solution: when a=7/3, LHS = RHS
when a = -3, LHS = RHS

how did u get 301 digits??

 

[lyounamu]

Re: ASAP help!!!!!!!!!!!!!!!!!!!!!!!!!!11

how did u get 301 digits??

Trial & error method with calculator.

 

[bubblesss]

Re: ASAP help!!!!!!!!!!!!!!!!!!!!!!!!!!11

Trial & error method with calculator.

oh but the answer says 302 digits.

 

[ChockoRepublic]

Re: ASAP help!!!!!!!!!!!!!!!!!!!!!!!!!!11

ahaha, trial and error.

 

[lyounamu]

Re: ASAP help!!!!!!!!!!!!!!!!!!!!!!!!!!11

oh but the answer says 302 digits.

Sorry, it's 302 digits. I forgot to add one at the end.

 

[bubblesss]

Re: ASAP help!!!!!!!!!!!!!!!!!!!!!!!!!!11

uhhh please can sum1 tell me how to do this question??????
b????????

 

[bubblesss]

Re: ASAP help!!!!!!!!!!!!!!!!!!!!!!!!!!11

Sorry, it's 302 digits. I forgot to add one at the end.

uhhh how on earth did u get 302????im lost

 

[bubblesss]

maths again

a point is square root 2 units from the line with the equation y=x. find the locus of the point? forgot how to do it.thanks in advance.

 

[tommykins]

Re: maths again

Perpindicular distance formula with x - y = 0 with P(x,y) and equate it to sqrt2.

if you want the answer, just reply again.