42 times 10 is 420 hope it helps you
The value of (f - g)(x) is -x² + 3x + 7.
<h3>What is Function?</h3>
The functions are the special types of relations. A function in math is visualized as a rule, which gives a unique output for every input x.
Here, the given functions are;
f(x) = 3x + 1
g(x) = x² - 6
Now,
(f - g)(x) = f(x) - g(x)
= (3x + 1) - (x² - 6)
= 3x + 1 - x² + 6
(f - g)(x) = -x² + 3x + 7
Thus, the value of (f - g)(x) is -x² + 3x + 7.
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Answer:20.8 is the correct answer
Step-by-step explanation:asked Siri
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
I think , in my opinion it’s is the middle I’m not that sure but if u can try then good luck
