Switch the variable x and y with each other. Then the correct option is B.
<h3>What is inverse of a function?</h3>
Let the function will be
f: X → Y
Then the inverse function will be
f⁻¹: Y → X
The function is given below.
f(x) = 3x – 10
Then the inverse function of the f(x) will be
Put y in place of f(x).
x = 3y – 10
3y = x + 10
y = (x + 10) / 3
Switch the variable x and y with each other.
Then the correct option is B.
Learn more about inverse function here:
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Answer:
12. x = 5
13. z = 2√21
Step-by-step explanation:
For any given pair of intersecting secants, the product of the distances to the near and far circle intersections is a constant. When those intersection points are both the same (as for a tangent), the same is still true: the product is the square of the length of the tangent segment.
12. (x-2)((x-2) +(x+4)) = 4(4+5)
(x -2)(2x +2) = 36
x^2 -x -2 = 18 . . . . . . . divide by 2 and eliminate parentheses
(x -5)(x +4) = 0 . . . . . . subtract 18 and factor
x = 5 . . . . . . . . . . . . . . by the zero product rule, the only solution with x > 2
___
13. 6(6+8) = z^2
z = √84 . . . . . . . . take the square root
z = 2√21 . . . . . . . simplify
Answer:
<h3>8 and 13</h3>
Step-by-step explanation:
Let the two numbers be x and y
If the two numbers differs by 5, then;
y-x = 5 ...1
x is the smaller
y is the larger
If seven times the smaller plus four times the larger is 108, this is expressed as;
7x + 4y = 108 ... 2
From 1;
y = 5 + x .... 3
Substitute 3 into 2;
From 2;
7x + 4y = 108
7x + 4(5+x) = 108
7x + 20 + 4x = 108
11x + 20 = 108
11x = 108-20
11x = 88
x = 88/11
x = 8
Since y = 5+x
y = 5 + 8
y = 13
hence the numbers are 8 and 13
I hope this helps you
(-)×(-)=(+)
-(-3)
+3
Answer:
5.6 miles
Step-by-step explanation:
;)
