Helppp pleaseee An explain how you got it please

0.5a - 2.3b
a=17, b=3
0.5a - 2.3b =

8.5-6.9 = 1.6

Step-by-step explanation:

so plug in the 17 instead of A making it 0.5(17) (multiply) and 2.3(3)

after multiplying the two its 8.5 subtracted by 6.9.

hope this helps :))

step-by-step explanation: 4 cause 2+2=4

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)