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The probability is given by .04 / .15 = .2667 or about 27%

The method looks good Melody, but,  almost at the top, shouldn't XY = 10 rather than 8 ?

I understand. But how do you remove the 10^x. I understand you are factoring out, but how doesn't this break against equation laws? Everything you change on < side you have to change on > side. For example

3x + 3 = 10

3x = 7

the answer is 18 2/3

Notice that we can multiply anything by 1

So

(1)* 10^x  = 10^x

So

10^x - (.2)*10^x   is the same as

(1)* 10^x  - (.2) 10^x  

So.....we can factor out the 10^x   and we're left with

10^x ( 1 - .2)

Does that help??

I understand the result and the last part. But what do you mean by (1)? What rules allow this 1 to come from nowhere and what rule allows 10^x to be removed because there is another 10^x? Maybe I lack the basics or something?

The scientific notation of 3,600,000 is 3.6*10^6.

Sorry...that was a mistype.....it should have been  .2

See if this helps

We really have  

(1) * 10^x - (.2) *10^x

What term is common to both......???.....answer....... the 10^x

So, factor this out and we have

10^x ( 1 - .2)   ....  and notice that 1 - .2  = .8

So we have

10^x (.8)

Many of the questions on this site are eminently ignorable, they don't deserve a response. Ideally they would be removed by a suitable spam filter. Repeat questions like for example 'what is 2 + 2' or 'what is 9 + 10' appear on a daily basis and should not be accepted for publishing. I've lost count of the number of times I've seen the question 'what is pi ?' It's hard not to be rude or sarcastic to someone who can't be bothered to put pi into some search engine, (I use dogpile, and yes that is a bona fide search engine), and to see what the response is, someone who apparently wants other people to do their work for them.

Now, given that your questions don't fall into the categories above, could you publish one or two of your questions that have not been answered, and indicate that it is you rather than someone else so that we know it's you ! If the questions are sensible they should get an answer. 

Here you go.......

.tiwwwmeanddate.com/date/duration.html

Sorry. You'll have to explain this on a retard level.

I don't understand how the subtraction with one happens and why it turns into 0.02 instead of 0.2.

10^x - 0.2 * 10^x = 40

Notice that 10^x is common to both of the first two terms.....so we can factor it out....so we have

10^x ( 1  -   .2)

Notice....that if we distributed the 10^x back......we would have what we started with....!!!

Does that help???

The sine and cosine are cofunctions

And sin Θ  = cos (90 - Θ  )

So

sin 77 = cos (90 - 77)  = cos 13

Thank you for replying.

Can you explain how and why 1 is subtracted with 0.2?

10^x - 0.2 * 10^x = 40

So we have, factoring

10^x(1 - .2)  = 40    simplify

10^x * (.8)  = 40   

10^x *(8/10) = 40   multiply both sides by 10/8

10^x  = 50              

This says that

log 50  = x  = about 1.698  or 1.7  if  we wish to round

-(5a²b-6ab+16c)+(7ab-4a²b)

Distribute the negative over the terms in the first set of parentheses

-5a²b+6ab-16c)+7ab-4a²b  combine like terms

-9a^2b + 13ab -16c

Boohoo! you whiny-assed crybaby. Melody will answer your questions, but she’s not here to wipe your nose.

You a big boy, you should wipe your own nose. If you need help, ask your mama.

There are 12 inches per foot....so   

3 x 12 inches = 36 inches

And since 1 inch : 32 inches

Then 36 inches x 32 = 1152 inches

im sorry i could have helped you but actually i had forgotten to logout!

i wasnt present here so.......

I'm pretty sure that cosine rule can be used for any triangle regardless of whether it is right-angled.

4% of baseball players should play basketball , just because they play baseball it does not alter their probability of being a basketball player. However if you pick a student at random there is only 0.6% (15% x 4%) chance that they will play both sports.

In conclusion 4% of basketball players play baseball but only 0.6% of the entire student body play both sports.

14+2=16 because it is two more. 

no it 2 you ding d**g dorfenshlouser