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Alex
2 years ago
6

I need to pass this test

Mathematics
1 answer:
g100num [7]2 years ago
3 0

Answer:

C. f⁻¹(x) = 3 - 5x

Step-by-step explanation:

To find the inverse of a function, switch x and y and solve for y.

f(x) = (3 - x)/5

Change f(x) to y.

y = (3 - x)/5

Switch x and y.

x = (3 - y)/5

Multiply both sides by 5.

5x = 3 - y

Subtract 3 from both sides.

5x - 3 = -y

Multiply both sides by -1.

-5x + 3 = y

Switch the sides.

y = -5x + 3

Change the equation.

y = 3 - 5x

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Given the function f(x) = 3x, find the value of f−1(81).
Shalnov [3]
Given the function f (x) = 3x, find the value of f-1 (81).
 For this case, the first thing you should do is rewrite the function.
 We have then:
 y = 3 ^ x
 From here, we clear the value of x:
 log3 (y) = log3 (3 ^ x)
 log3 (y) = x
 Then, we rewrite the function again:
 f (x) ^ - 1 = log3 (x)
 Now, we evaluate the inverse function for x = 81:
 f (81) ^ - 1 = log3 (81)
 f (x) ^ - 1 = 4
 Answer:
 the value of f-1 (81) is: 
 f (x) ^ - 1 = 4
4 0
3 years ago
After analyzing a data set using the one-way ANOVA model, the same data are analyzed using the randomized block design ANOVA mod
Contact [7]

Answer: Always equal to

Step-by-step explanation:

A one way analysis of variance refers to the technique that is used in knowing if there's significant difference between two samples means.

Based on the options given, it should be noted that SS (Treatment) in the one-way ANOVA model is always equal to the SS (Treatment) in the randomized block design ANOVA model.

4 0
3 years ago
I need help with my assignment but dont know how to do it/ what should i do?
ohaa [14]

Answer:

first explain what you need help with specifically then maybe people can help, to bland of a question

5 0
3 years ago
1) the point where the x abd y axis meet 2) if m< A + m<D = 90, then <A and D are ____ angles 3) an angle formed by opp
Brums [2.3K]

1. The point where x and y axis meet is the intersect, origin of the coordinate system (0,0)

2. m<A and m<D = 90 then <A and D are  complementary angles

3. 180 angle or linear rays

4. Obtuse angle measure more than 90

5. Segment of equal lengths are congruent segments

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8 0
3 years ago
<img src="https://tex.z-dn.net/?f=3%20%2B%20%284%20%2B%205%29%20%3D%20%283%20%2B%204%29%20%2B%20m" id="TexFormula1" title="3 + (
max2010maxim [7]

Answer:

The value of m in the expression is 5

Step-by-step explanation:

Given expression as :

3 + ( 4 + 5 ) = ( 3 + 4 ) + m

Or,  3 + ( 9 ) = ( 7 ) + m

Or,  12  = 7 + m

∴   m = 12 - 7 = 5

Hence The value of m in the expression is 5   Answer

8 0
3 years ago
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