The highest point in a state park is 145 feet above sea level. the lowest point is 28 feet below sea level. what is the difference in elevations?

173 feet

Step-by-step explanation:

The highest point in a state park is 145 feet above sea level and  the lowest point is 28 feet below sea level.

Therefore, the level below the sea level is considered negative, thus the difference in their elevations is given by:

The highest point in a state park-the lowest point below sea level

145-(-28)=145+28=173 feet.

a=24; b=12

step-by-step explanation:

a/b=2: 1

a=2b

36/(1+2)=12

b=12

a=24

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.