Think of it this way:
_ _ _ (3 digit number)
for the first blank you could have 7 possibilities
for the second blank you could have 6 possibilities
for the third blank you could have 5 possibilities
because each time you fill in a blank one number is removed from the list of possibilities
7×6×5=210. there are 210 possibilities
Use ax^2 + bx + c = 0
ac = -8
b = 2
The factors are 4 and -2.
Plug them into the equation:
x^2 + 4x - 2x - 8
Then factorise it:
x ( x + 4) - 2 (x + 4)
so m = 4
(x + 4)^2
Answer:
Mechanical/physical weathering - physical disintegration of a rock into smaller fragments, each with the same properties as the original. Occurs mainly by temperature and pressure changes
Chemical weathering - process by which the internal structure of a mineral is altered by the addition or removal of elements.
Step-by-step explanation:
I REALLY NEED BRAINIEST THX
Answer:
121, 129, 137, 145, 153, and 161
Step-by-step explanation:
If you look at the sequence there is a pattern. You are adding by 8. To get 121 I added 8 to 113. You can check by subtracting 8 from 121, this should give you 113.
Okay so you just set the second equation equal to the first so that -3 = -6. Then x cancels out so you can figure out x.
x=14
Once you find that out plug it in to one of the equations and you get that
y=6
