Cars a, b, and c are travelling at constant speeds.
select the car that travels the fastest.
choose 1
choose 1

(choice a)
a

(choice b)
b
car b travels a distance of ddd kilometers in hhh hours, based on the equation 55h=d55h=d55, h, equals, d.

(choice c)
c
car c travels 135135135 kilometers in 333 hours.

m=-16

step-by-step explanation:

you could deduce the conclusion directly using the facts pertaining to the specific situation.

hope this .

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)