Answer:
a). 
b). V = 15 units
Step-by-step explanation:
Focal length F of a lens made by combining two lenses of different focal lengths U and V will be,

A). By solving the given formula,



B). If F = 6 and U = 10 then we have to find the value of V.
By substituting the given values in the formula,


V = 15 units
Therefore, focal length (V) of the lens = 15 units
Hello,
Please, see the attached file.
Thanks.
Answer:
-3
Step-by-step explanation:
The slope of a line can be calculated with the formula (y2-y1)/(x2-x1)
In this case we have:
(-4-(2))/(7-5)
(-6)/(2)
-3
Let me know if this helps!
Subtract 1/4 x because you wanna isolate y
Hi there!
To convert an equation from standard form to slope-intercept form, you need to pull the x over to the other side by making it 0 (by either subtracting or adding that number on both sides):
4x + 2y = 10----> 2y = -4x + 10
Now, we simply divide both sides by the coefficient on y and there you have it!
y = -2x + 5