Answer:
-4
Step-by-step explanation:
Point slope form: y - y = m (x - x)
5 - (-3) = m (-2 - 0)
5 + 3 = m (-2)
8 = m (-2)
m = 8/(-2)
m=4
Answer:
120 x 10^3
7 x 10^5
9 x 10^4
Step-by-step explanation:
135.78 rounded to the nearest tenth is 135.8.
LW = 45
L + 2W = 19
L = 19-2W
substituting for L :-
W(19-2W) = 45
-2W^2 + 19W = 45
2W^2 - 19W + 45 = 0
W = 5 or 4.5
If W = 5, L = 9
If W = 4.5, L = 10
So there are 2 possible answers.
Nanometers are a really small measurement, one billionth of a meter, I believe.
So nanometers is used to describe tiny stuff, like atoms of a water molecule, and waves of light.
