To estimate the perimeter of a field, Nyah walked 10 steps, measured the distance, and divided that distance by 10 to get an average step length of 80 cm. She then proceeded to walk the field
counting her steps. Partway around the field, she realized that she had an appointment soon so
she jogged around the remainder of the field, still counting her steps. In total, she had 521 steps
so she preformed the following calculations.

i agree because i see the other persons thinking is clear

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)

show da graph

step-by-step explanation:

the correct answer is c