All Answers 358108 Answers

Ok, let's do an example thing. 

-2(-4)

So, -1*-1=1

That negates both of the negative signs, making both numbers positive. 

2*4=8, so the answer to the example is 8.

Try this one: -3(-2)

Here's another way to do this......let the normal driving time = T

And Rate  * Time   = D   .....so....since the distances equate......

10(T + 5)  = 25(T - 1)       (1)

10T + 50  = 25T - 25

75  = 15T      divide both sides by 15

T = 5

So......using either side of (1), the distance is 10(5 + 5)  = 10 * 10   = 100 miles

so i mean so i do the - math and go like -6 -3 is -9 or do i do -6 -3 times and be 18- or would it be going down to positve 12?????????????

-3*-1=3

3*-1=-3

70000000000000000000 <--- That number is 70 quintillion.

I had an ok day... Tomorrow is gonna suck tho. Finals.  ;-;

162728262*29363828 = 4778324696106936

 Cphill, Thank you! I could read it perfectly, even if it didn't format correctly. 

It is -6.

-3*-2=6        6*-1=-6

i care and answered

It means that the slope Does Not Exist  [D.N.E.]......a better term is to say that the slope is undefined.....to see why, note....

slope  = [ 5 - 10]  / [ 12 - 12]   =   -5/0      but....we can't divide by 0 ...  [ this is undefined]

with????

what do you mean

what do you mean

7. arithmetic....we are adding -16 to each term to get the next one

8. arithmetic......we are subtracting 12 each time

9.  You should be able to do this one

10. note  ..      .5 meters  =  50cm

Here's the formula for the height before the nth bounce

H = 50(.56)^n-1 

The top of  the 4th full arc will occur before the 5th bounce....so

H  =  50 (.56)^{(5 -1)}  =  50 (.56)⁴ =  4.91725 cm

15.   If the common ratio were =1 , all the terms would be the same as the first one....!!!!

my sister deleted my stuff and i cant see it no-more

THIS QUESTION WAS ANSWERED YESTERDAY BY CPhill. HERE IS HIS ANSWER. WHY DID YOU POST AGAIN?

One solution

4x + 2 = 6x - 4       subtract 4x form both sides.......add 4 to both sides

6  = 2x     divide both sides by 2

3 = x

Infinite solutions......the equations are exactly the same

6x - 8   = 6x - 8     subtract 6x from both sides....add 8 to both sides

0 = 0       this will always happen  in equations with infinite solutions

No solutions......these are easy to spot.......we are adding/subtracting different quantities to like quantities

7x + 8  = 7x  - 9

Note that this is impossible......we can't add 8 to one thing and have it equal the same thing less 9

Doing the math.........subtract 7x from both sides

8  =  -9

This will always happen when we have no solutions......we will end up with a false statement

Hope this helped.....!!!

Jan 20, 2016 1:58:55 AM

.4x-2^3 =

.4x-2x2x2 =

.4x-8 =

(-3.2)

Just a grammatical mistake by the questioner.

The slope Intercept form is : 

\(Y = mx + b \)

where m is the slope of the line 

b is the point of intersection with the Y axis . 

for the point ( 6,8) and m = 1/2 

\(8 = \frac{1}{2}*6 + b \)

\(8 = 3 + b \)

\(b = 8 - 3 \)

\(b = 5 \)

 \(Y = \frac{1}{2}x + 5 \)

CPhill , In the second equation why did you add 4 ? the question said  4 years ago from now?

i agree

-3.2

Let x be Mary's age now and y  be her elder sister's age now....and we have the following system

2(x -8)  = y - 8      →   2x - 16  = y - 8   →  y = 2x - 8    (1)

x + 4   = (2/3)(y + 4)       (2)

Put (1)  into (2)  and we have

x + 4  = (2/3) (2x - 8 + 4)       multiply both sides by 3

3x + 12 = 2(2x - 4)

3x + 12 = 4x - 8      subtract 3x from both sides......add 8 to both sides

20  = x       and this is Mary's age now

y  = 2(20) - 8   = 32    and this is her elder sister's age now

Proof :

8 years ago....Mary was 12 and her elder sister was 24......twice as old

4 years from now, Mary will be 24 and her sister will be 36......Mary will be 2/3 rds  of her elder sister's age

1. –6, 18, –54, 162, . . .

Hi haley,

Find the common ratio of the sequence.

1. –6, 18, –54, 162, . . .

To find the common ratio r of any sequence you select any term and divide it by the term before it.

so

\( r=18\div -6\\or\\ r=-54\div 18\\or\\ r=-162\div -54\\\)

do all these and you will see what I mean.

you can do the next 3 yourself.

Haley please don't put all your homework up like this.  We are here to help you learn not to do all your HW for you ://