Distance=Speedx Time Speed=Distance/Time
Time = Distance/Speed
1)D=200 km
S=80 km/hr
T=?
2)D=?
S=20km/hr
T=3.5 hr
3)D=150 km
S=60 km/hr
T=?
4)D=?
S=80 km/hr
T=1 1/4
5)D=240 km
S=?
T=2.5 hr
paki answer po :)​

step-by-step explanation:

the answer is:

mean: 6

mad: 2.14

i'm assuming that it's c.)   volcanoes built the mountains and earthquakes tore them down.

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)