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-6*.5 = -3

-3 is your answer

72/9 is 72 divided by 9. 72/9=8

8+7=15

Hope this answers your question

To write a fraction on the computer or other devices use a slash like this--> /

Example: 8/9

5 bracelets because 4 hours is 240 min.

240-45=195 =1 bracelet

195 -45= 150= 2nd bracelet

150-45=105=3rd bracelet

105-45=60=4th bracelet

60-45=15=5th bracelet

They can't make another bracelet because it takes 45 min and they only have 15 min left.​

Yes, 1/21

DIvide both numbers by 4 and get 9/189 then divide both by 9 and get 1/21.

(Note: You can divide differently but the simplest form is 1/21)

Drew has 50 red, green, blue, marbles. He has six more red marbles than blue marbles and four green marbles than blue marbles. Write and solve an equation to determine how many blue marbles Drew has.

Blue marbles=B

Red marbles=B+6

Green marbles=B+4

B+(B+6)+(B+4)=50

3B=50-6-4

3B=40

B=40/3

B=13 1/3 BLUE MARBLES!!!!!. YOU MADE THIS ONE UP YOURSELF, DIDN'T YOU? CHANGE THE TOTAL TO 70 MARBLES, SO THAT YOU HAVE AN EVEN NUMBER:

60/3=20 Blue marbles

20+6=26 Red marbles

20+4=24 Green marbles

\(x = {-b \pm \sqrt{b^2-4ac} \over 2a}\Gamma \)

X=1 I could do it in my head

6*4=24 8*3=24

Answer=24

-1 11\12 ÷ 1 1\3  

- [ 1 + 11/12]   = - [ 23/12]

[1 + 1/3}   = 4/3

So we have

-23/12 /  4/3      invert the second fraction and multiply

-23/12 * 3/4   =

-69/48  =      reduce

-23/16

Assuming you want to facor this, we have :

4v²-16v+7  =

(2v - 7) ( 2v - 1)

3:x=x:27

x = 27/3 =9, so that:

3:9 = 9:27

3 and -5

Then you have to do long division BY HAND!!!!!!

It doesn't matter which order in which the sales discount and coupon are applied....

Applying the  discount and then the coupon, we have.....

270 *(1.00 - .25 ) * (1.00- .10)   =  $182.25

√ [ 5  - √ (4 - x) ]   = 0      square both sides

5 - √ (4 - x)  = 0         add  √ (4 - x)   to both sides

5 =  √ (4 - x)      square both sides again

25  = 4 - x      add x to both sies, subtract 25 from both sides

x = -21

With out a calculator!!!!!!!!!