A train travels 120 miles in 1.5 hours. At this rate, how many miles can it travel in 5 hours?

 400 miles

Here's one approach to solving

We can form a proportion like so

(120 miles)/(1.5 hours) = (x miles)/(5 hours)

120/1.5 = x/5

120*5 = 1.5*x cross multiply

600 = 1.5x

1.5x = 600

x = 600/1.5

x = 400

Another approach:

Use the formula

speed = distance/time

to find the train's speed is 120/1.5 = 80 mph

Then we can say,

distance = rate*time

distance = 80*5

distance = 400 miles

a28=58

step-by-step explanation:

a1=a1+(n-1)d

a28= 4+ (28-1)2

a28=4+(27)(2)

a28=4+54

a28=58

no because mercury has a density of 13.6 grams per centimeter squared while gold has 19.32 grams centimeter squared

step-by-step explanation: