Why everyone write that link
Answer :
There are two cases in this problem :
1). When the ion is positively charged :
Now, the ion and the substance both are positively charged hence when brought together will repel each other because equal charged particles repel each other.
2). When the ion is negatively charged
Now, the substance is positively charged and the ion is negatively charged so both will attract each other because the particles with opposite charges attract each other.
Answer:
a) M(-1, 4.5)
b) 10.63
c) 7/8
Step-by-step explanation:
a)
x = (3 + (-5))/2 = -1
y = (8 + 1)/2 = 4.5
M(-1, 4.5)
b) d = sqrt[(x1-x2)^2 + (y1-y2)^2] = sqrt(113) = 10.63
c) m = (y2-y1)/(x2-x1) = 7/8
Answer:
Sine is equal to opposite over hypotenuse in right triangles. Let's say we have a 3-4-5 right triangle, the side opposite the 90° angle is 5, and 5 is also the hypotenuse. 5/5 = 1
Therefore, in all right triangles, the side opposite the 90° angle is equal to the hypotenuse, and anything over itself is equal to one.
(Not sure if this is a mathematically correct way to explain it, but it makes the most sense to me.)
Answer:
Step-by-step explanation:
The middle of the circle is at 4, -2, and r is 3
so
x + 4 + y + 2 = 3
combine like terms
x + y + 6 = 3
x + y = -3
square all the numbers
easy!
