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They are both constipated and drunk so if you use the pythagorean therorem, (a squared + b squared = c squared) you will find that Sally drank the most and that the zombie apocalypse will happen in 2.5273 days. but anyway I don't feel like telling you the answer because you're mean.

Substitute the second into the first.

x+3= -4x+3

5x=0

x=0

This is this, and that's that!

$${\frac{{\mathtt{2}}}{{\mathtt{5}}}} = {\mathtt{0.4}}$$

$${\frac{{\mathtt{6}}}{{\mathtt{7}}}} = {\mathtt{0.857\: \!142\: \!857\: \!142\: \!857\: \!1}}$$

$${\frac{{\mathtt{6}}}{{\mathtt{7}}}}{\mathtt{\,-\,}}{\frac{{\mathtt{2}}}{{\mathtt{5}}}} = {\frac{{\mathtt{16}}}{{\mathtt{35}}}} = {\mathtt{0.457\: \!142\: \!857\: \!142\: \!857\: \!1}}$$

Another way would be to find a common denominator for each fraction an then subtract:

$$\frac{2}{5}=\frac{14}{35}$$      

$$\frac{6}{7}=\frac{30}{35}$$ 

what ever you want

$${{\mathtt{2}}}^{{\mathtt{4}}} = {\mathtt{16}}$$

Each toss give either heads or tails, so there are 16 ways that 4 tosses can combine.

2^4 =16 if you care about order

5 if you dont care about order.

Reading the question again.......go with Anonymous' answer......

If you want to use 2 as the log base......type in

" log (a, 2) "   where "a" is the number you're taking the log of in base 2

subtract

$$9\frac{1}{4}-7\frac{1}{2}=1\frac{3}{4}$$

You must convert the fractions to a common denominator before subtracting. Be careful, you must "borrow" 1 from the whole number.

$$8\frac{5}{4}-7\frac{2}{4}=1\frac{3}{4}$$

9 1/4   =  37/4

7 1/2  =   15/2

37/4 - 15/2   =

37/4 / 30/4  =

7/4  lbs left = 1 3/4 lbs.

I used this "formula".........

C(26,5)  = 26! / [ (26 - 5)! (5)! ]

For a linear equation of the form y=mx+b, the slope appears in the position of the "m".

its 19 but if you work it out then 21 but now we all know why you put this or your dumb asf

Mine counts all the different sets.....Anonymous' counts total ways......since both words are used in the question.....take your pick....

$$\underset{\,\,\,\,^{\textcolor[rgb]{0.66,0.66,0.66}{360^\circ}}}{{tan}}^{\!\!\mathtt{-1}}{\left({\mathtt{0.155}}\right)} = {\mathtt{8.810\: \!732\: \!985\: \!985^{\circ}}}$$

@cphill how did you get the answer can you please give me a solution TY

no i am not

Yeah, rosala....you're correct.....I applied it at the end to convert the decimal to a percent......it should be 100%, though......not just 100...!!!

OK, let's assume that you startd with $100.

The first discount of 20% is $20, leaving you with $80.

The next discount of 10% (of $80) is $8, for a total discount of $28.

This could have been achieved with one discount of 28%

try (n/d) for fractions if there isnt a fraction key.

Anonymous,

99

Have to make certain assumptions:

without replacement, order doesn't matter

The first letter can be selected from 26, the second from 25, etc

results in 7893600 combinations, I think.

But 100 is necessary it can't be thrown this is the formula my teacher uses

We have 26 letters and we want to choose any 5 of them.....this is given by the combination......

C(26,5)  = 65,780  ways.... (different sets)

We have

C(13,11)(.7)^11(.30)^2 + C(13,12)(.7)^12(.30)^1 + C(13,13)(.7)^13(.3)^0   =

about 20.2%