Solveit

4(x+y)+10y=16

12x+5(y+2x)=16

30 minutes

i think:

P-Pat

K-Kate

P=K

Pat and Kate shared some stamps. Pat then gave 2/5 of what she had. How many more percent did Kate have than Pat in the end? (Round off to the nearest whole number.)

P-2/5P=3/5P (how many Pat left)

2/5P=2/5K

K+2/5K=7/5K(Kate s stamps whith 2/5 Pats)

Pat then gave 2/5 of what she had. How many more percent did Kate have than Pat in the end?

Let s found how many percent of P is K

(7/5)/(3/5) = 2.3333333333333333=2.33(aprox)

to find how many more percent:

233-100=133

Answer:133

(75/15)*(1/4)=75/60

24                    

i think doesn t exsist:

\(\frac{10}{\sin{31}}=\frac{40}{sinB} \\ 10sin(B)=40\sin(31) \\ sin(B)=2.06015229964\\ B=?\)

but probably i am wrong so wait for boss

2nd button acos

http://i68.tinypic.com/ojqjoy.jpg