:16 25 a) V62.82 - 162 +82
b) 10,4 - V1,6 + 10,9
c) 70,04 – 1,69 + 70,25
d) 70,(2) - 70,(8) + V3,(5)
(V(-2)* + V22
+
8) 2V15 + 2/5. [932 – 3(3-12 – 2/3)]
| (39.46+ 41.43)? + |(39.46 – 41.43)?
h)
7
7
8
f) 22048
-2210
3)
9
9
9
13.23

step-by-step explanation:

yes it represnts a functio, their are not 2 of the same numbers on the both sides

here's a poem i finished a while ago. i hope you like it and that it inspires you.

delaney would like to make a 5lb nut mixture that is 60% peanuts and 40% almonds.

she has several pounds of peanuts and several pounds of a mixture that is 20% peanuts and 80% almonds.

let 'p' represent the number of pounds of peanuts needed to make the new mixture, and  

let 'm' represent the number of pounds of the 80% almond-20% peanut mixture.

:

p + m = 5

therefore

m = (5-p)

write an equation based on the percent of peanuts

1p + .2m = .6(5)

replace m with (5-p)

p + .2(5-p) = .6(5)

p + 1 - .2p = 3

p - .2p = 3 - 1

.8p = 2

p = 2/.8

p = 2.5 lbs of peanuts required

then

5 - 2.5 = 2.5 lbs of the peanut/almond mixture required

:

a) what is the system that models this situation?

p + m = 5

1p + .2m = .6(5)