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10+6-5+24=35

35 is the answer

So we have

[ 2(3) + 3(6) ]  / [ 3 * 6 ]   =

[ 6 + 18 ] /  [ 18 ]  =

24 / 18  =

4 / 3

Test (x + 3)

-3  l   1    - 3     -25      75

               -3       18      21

         1    -6       -7       96

So, this is the one that isn't a factor.......(check to see that the other two ARE factors.....)

Let x be the slower rate......and x + 5 is the faster rate

Equating times, we have......Distance / Rate = T   ......so....

6miles /( x + 5)mph   =  4 miles / (x) mph       cross-multiply

6x  = 4(x + 5)

6x  = 4x + 20     subtract 4x from both sides

2x  = 20             divide both sides by 2

x = 10 mph    = the upstream rate

And x + 5 = the downstream rate  = 10 + 5  = 15 mph

By the Factor Theorem, it can't be  (x - 3).....

Test (x -2)

2     l  6   -19     16      -4

                12   -14       4

         6     -7       2       0

So "a"  is correct

Let N be the number.....so we have....

8N² = 96     divide both sides by 8

N² = 12   take the square root of both sides

N = ±√12

Cheap answer?  My answer was cheap?  LOL  'm fine

Lowdown =  getting a "cheap" answer from another person's effort......LOL!!!

Lowdown???

That's lowdown, h7......like shooting fish in a barrel.......LOL!!!!

Really???  I LOVE FINISHING!

780*52=40 560

LOL

Assuming he's getting full pay on vacation, we have

$780 x 52  =  ????

(I'll let you finish this......)

And I was taking another guess....LOL

I don't either....I'm just taking a guess....LOL!!!!

Anyway.....they have two choices......!!!!

But the questioner put a space.....IDK

I'm not sure h7, but I think the questioner wants to know the factor tree of 454....so we have

454 =

227 X 2

Both of these are prime.....so.....that's it !!!

You don't need to give me points if you aren't giving yourself points for good manners!  Fair is fair!

Sunglass crazy! 

Let's look at h7's answer

Note that 40 can be factored as 2³ x 5

And 50 can be factored as 5² x 2

Now we can find the LCM by taking each different factor along with the highest factor on that power.

2³ x 5² = 

8 X 25 =

200  ........just as h7 found

Thank you CPhill

4 breaks to 2 and 2

54 breaks to 6 and 9

6 breaks to 3 and 2

9 breaks to 3 and 3

So 4 is 2^2

And 54 is 2*3^3

Very nice, h7......

hey hey

I don't see any choices, but the answer is that all real numbers greater than 16 and less than 25 would have square roots between 4 and 5.

9+10=19 and here you go