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5^21 (4^11) =2 (10^n)

let's work with 2 (10^n)

2 (5^n) (2^n)

5^n (2^n+1)

5^n (4^((n+1)/2)

n=21

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envyk10 wrote:
Substitute this in eqn 1 along with k = 2l

i think that's 2k=L

twice as many k as L

but u still get the same answer

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let x be the cups of milk to the 2 cup

then 4-x to the 4 cup

x/2=4-x/4

x=4/3

4-4/3= 8/3

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Re: Work problem I cant seem to solve

sev wrote:

.05t/40+.05t/24=1

correction: 0.5t/40 +0.5t/24=1

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let's work with 1600 first 1600= 4^2 * 100 1600=4^2 * 4*25 1600=4^3 * 25 since 25 is just above 16 we can say 4^3 * 4^2.1=1600 so, 4^5.1 =1600 now back to the orig: 4^4x=1600 x= 5.1/4 pug x into 2nd equation [4^(x–1)]^2 (4^1/4)^2 4^1/4 is the same as sqrt root of 2= ans =2 since we approximate the a...

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stamp question

The price of postage stamps has increased 5 cents per year
every year since 1990. If 10 stamps were purchased every
year from 1998 to 2002, the total cost would be $35. How
much did a stamp cost in 1995?

A. 45 cents
B. 35 cents
C. 40 cents
D. 48 cents
E. 52 cents


OA coming after some solutions

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ans=D

By knowing BE or DE, we can extrapolate the angle BDE.

Thus we can see what angle ABD is and then angle BAD.

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ans=800

60x+40y=P

60(x-10)+40(y+10)=3/4 (P)

60x+40y-200=3/4P

60x+40y=3/4P+200

since 60x+40y=p,

P=3/4P+200

1/4P=200

P=800