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30 - [(9*2) - (3*4)]      simplify within the parentheses

30 - [ (18) - (12) ]    simplify within the brackets

30 - [ 6 ]    subtract

25

My answer is incorrect; I misread the question; ignore my answer.

3 and 7 are prime

10 factors as 2 x 5

So...the LCM  =  3 x 7 x 2 x 5  =   210

1 + 3 + 5 + ... + 25 + 27 + 29  =  225

t_n  =  t₁ + (n - 1)d            t₁ = 1      n = 15     d = 2

     =  1 + (15 - 1)(2)

     =  29

Sum  =  n(t₁ + t_n) / 2

          =  15(1 + 29) / 2

          =  225

Solve by substitution:

     4x - y  =  5

     4x + 4y  =  -4     --->     (divide by 4)     --->     x + y  =  -1

Now, we have:

     4x - y  =  5

       x + y  =  -1

Solve the first equation for y:  4x - y  =  5

                                                        -y  =  -4x + 5

                                                         y  =  4x - 5

Substitue this into the second equation:  x + y  =  -1

                                                            x + (4x - 5)  =  -1

                                                                    5x - 5  =  -1

                                                                          5x  =  4

                                                                            x  =  4/5

Substitue this value for x back into the equation:   x + y  =  -1

                                                                                   4/5 + y  =  -1

                                                                                             y  =  -9/5

20% of 95 = 0.2*95=19

so the regular price of $95 has been reduced by $19

95-19=76

so the sale price would be $76

Divide 9 by both sides and you'll get your answer. 

You're welcome :)

30%  =  0.30

10%  =  0.10

30% x 10%  =  0.30 x 0.10  =  0.03  =  3%

but when i type 0.95^100000 in google it says 0 w*f

No; the larger the value of x, the closer it gets to zero, but never reaches it.

The probability that A occurs  =  0.027

The probability that B occurs  =  0.00034

The probability that A doesn't occur  =  1.000 - 0.027  =  0.973

The probability that B doesn't occur  =  1.00000 - 0.00034  =  0.99966

The probability that only one of these independent occurs 

   =  ( probability that A occurs and B doesn't occur )

               + ( probability that B occurs and A doesn't occur )

The probability that A occurs and B doesn't occur  =  0.027 x 0.99966  =  0.02699082

The probability that B occurs and A doesn't occur  =  0.00034 x 0.973  =  0.00033082

Adding these two values together  =  0.0273  (rounded to 3 significant digits) 

you just did

Thanks!

1:

0.5 x 0.5 x 120

or

0.5 x 120 = 60

0.5 x 60 = 30

2. The downpayment was 15% which is 0.15 

0.15 x 154500

3. 75% = 0.75

0.75 x 2050

Yo no hablo español

thats nasty

Who is gone?

-15c+3

i agree ive been poasting warnins soon im emailing andrew about this NO drama i do best in MATH thats why my IQ is 102

Let the amount of money John started with=M

Let the initial number of days =d

M - 50d =2500, M - 200d =1,000, solve for M, d

M=$3,000 original amount of money that John started with.

d=10 initial number of days.

Since Nan spent $100 per day initially, therefore she must have had:

10 x $100 =$1,000 to start with.

Since John spent $3,000 - $1,000 =$2,000 @ $100 per day, in the 2nd scenario, therefore it took him:

$2,000/$100=20 days to spend that money.

16 divided by 3/8 is 64

16<--- make it 16/1 

make divided into multiplication

make the reciprocal of 3/8 now is 8/3

and you have to simplify 16 and 3. 16 as the numerator and 3 as the denominator.

now you have 8/1 x 8/1 which 8x8 is 64 and 64/1 = 64 due to it being an improper fraction._{<----- this is the work following}