Question 3 unsaved which type of mine involves digging tunnels and shafts deep underground? question 3 options: strip mine smelting openpit mine subsurface mine

Sub-surface mining involves digging tunnels and shafts to deep underground.

Option 4

Explanation:

Mining is the process of extracting ores of minerals from the earth crust depending upon the presence of ores in the earth crust position. Some mineral ores are tend to present in the surface of earth crust.

In order to extract them, surface mining is done. Strip mining and open pit mining are types of surface mining. This type of mining does not require tunnelling and digging deep shafts as the ores can be obtained from the upper layers of earth crust.

Smelting is the process of extracting minerals from the ores, so it is not a process of mining. Thus, sub-surface mining uses digging tunnels and shafts as they are required to extract ores buried in the deep underground of earth crust.

because it says use -2,0,and 2 for x, we can plug those numbers into the equation. y/4=3/4(-2)+2   y/4= -1 1/2 +2 now to get x by itself, we can multiply each side by 4. y=-6+8 which equals y=2 when x=-2. now you can do the same thing with 0 and 2 as x. you get y=8 when x=0 and y=14 when x=2.

x   |   y

-2 |   2

0   |   8

2   |   14

there is no correct list among the choices you've provided.

the list might look something like this:

-- baby human

-- piccolo

-- flute

-- soprano singer

-- trumpet

-- tenor singer

-- trombone

-- baritone singer

-- baritone horn

-- bass singer

-- tuba

since i had to make up the list myself, i made it easy on myself, and i didn't try to shuffle the string instruments and woodwinds into it too.