Try adding the two and think of it mentally as if you were drinking the amount of cups of water that's what I do when I have questions like these :))
let the number be x.
a number decreased means
x-
and the sum of the number and 4 is
x+4
to put the expression together, we get. put them in parentheses
x - ( x+4 )
= x - x -4
= - 4
Wall height=wall above ground + wall below ground
or, 6 ft = 4 ft + wall below ground
or, wall below ground = 2 ft
Answer:
it's answer is 68°.......
Answer:
1/12
Step-by-step explanation:
3/4 + -2/3
Get a common denominator of 12
3/4 *3/3 - 2/3 *4/4
9/12 - 8/12
1/12
