Ineed with this. edward started his hike at an elevation of 115 feet below sea level. throughout the hike he ascended 3,200 feet then descended 676 feet. how much did this elevation change?

His elevation is changed by 2409 feet.

Step-by-step explanation:

Since we have given that

Length of elevation below sea level = -115 feet

Length he ascended = (+) 3200 feet

Length he descended = (-) 676 feet

So, this elevation changes by

Hence, his elevation is changed by 2409 feet.

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116