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? = √24 + √6  

But that is exactly the reason it begins with 1,000,000,001. This number is NOT divisible by 2!!. Only the SUM of its digits, which is; 1 + 1 = 2 is divisible by 2. Do you actually understand the answer that was given to you? Similarly, the last number: 9,999,999,999 is NOT divisible by 2, but the SUM of its digits which equals 90 is divisible by 2. 

Do you see it?

oh, i'm sorry.

for example:

sum of digits of 23: 5

sum of digits of 5287: 5+2+8+7 = 22

do you understand or is it unclear? sorry if it was not clear before.

no... sorry because it is not asking for the number itself to be divisible by two, it is asking for the sum of the digits to be div. by 2...thanks for trying!

find n if n*n!+n!=720, if n!=n*(n-1)*(n-2)...2*1

n = 5

5 * 5! + 5! =600 + 120 = 720

29 - 2 * (11x - 3) =(19x + 3

22x - 6 =19x + 3

22x - 19x = 3 + 6

3x = 9

x = 9 / 3 = 3. So, angle 2 =(11*3 - 3) =30 Degrees.

 uvacowdo: Is 4,500,000 the right answer?

You know how to add, so why are you asking this?

The answer is 4,500,000.

F + D + F + 6D =30,   

F + 14D =2*[F+7D] - 1, solve for F, D

F =1 - This is the first term
D =4 - This is the common difference.

AP =1, 5, 9, 13, 17, 21, 25, 29, 33, 37, 41, 45, 49, 53, 57.

P = (7/3,13/3).

What the SUM of the digits of this number? 1,000,000,001 =2. Is 2 divisible by 2? Next number:1,000,000,003 =4. Is 4 divisible by 2? Next number: 1,000,000,005 =6. Is 6 divisible by 2?....etc.

What are you looking for? Can you give an example, say of a much smaller number, explaining exactly what you want?

that is wrong. read the question please, but thanks for trying

11 -

Let the numbers of hours worked by Isaac = H

Ruby worked                                                     = H + 6

Svetlana worked                                               =4*[H + 6]

H + H + 6 + 4*[H + 6] = 126

6H + 6 + 24 = 126

6H = 126 - 6 - 24

6H = 96

H = 96 / 6 = 16 Hours worked by Isaac.

16 + 6 = 22 Hours worked by Ruby

4 * 22 = 88 Hours worked by Svetlana.

So that: 16 + 22 + 88 = 126 Hours worked by all.

Hmm..I'll try..but seeing that 95% get it wrong, who knows if this is correct...

r= roses

s= sunflowers

p= purple flowers

So:

r+r+r=60: 3r=60 (I won't say that r=20...yet, as this is meant to be hard...)

r+2p=30

p-2s=3

s+r*p=?

ok, so using the information that we have, we can say that it is best to turn s+r*p into all p's. So:

r=30-2p

s=(3-p)/2

So, the last question wants:

(3-p)/2+30p-2p^2, which is:

(3-p+60)/2-2p^2

Based on what we know, p should be 10. So, plugging that in, we get:

53/2-200.

I really don't want to simply that, but you get the idea, it's different from what 'normal' people would have got...unless...I made a mistake along the way, which is probably what happened...

:)

The reflection is (-12/5,22/5).

Q = (2,-4) and K = 27.

I assumed that 12 means 12% alcohol solution.

Let the number of ounces of 12% solution = T

0.12T + 0.2*2 =0.14*[T+2], solve for T

T = 6 ounces of 12% solution added to 2 ounces of 20% solution will make 8 ounces of 14% solution.

Actually, no. Many think it is 2, but they are in fact wrong, or at least short sighted. Imagine a=b.

a = b

a^2=ab

a^2-b^2=ab-b^2

(a+b)(a-b)=b(a-b)

a+b=b

2b=b

2=1

Therefore 1+1=3 or 4. 
 

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OR

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Another answer is 10. This is simple. It's binary for 2. But, you probably don't know that, because you are to caught up wondering what 1+1 is.... (if only GingerAle was here...)

So...I just turned your 'easy' question into a 'teachable moment', lol.

:)

Thank you! tHat was a good answer. Can you explain how you got that though? It is correct.

I dont know why my image is blocked by the mod. can you see it?