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Vinil7 [7]
3 years ago
6

F(x) = -2x + 9, find x if f(x) = 23

Mathematics
1 answer:
JulijaS [17]3 years ago
7 0

Answer:

x = -7

Step-by-step explanation:

f(x) = -2x + 9

f(x) = 23

therefore, f(x) =

-2x + 9 = 23

     -2x = 23 - 9

     -2x = 14

       -x = 14 ÷ 2

       -x = 7

        x = -7

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What are the slope and y-intercept of the line?
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Step-by-step explanation:

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2 years ago
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A local factory uses a manufacturing process in which 70% of the final products meet quality standards and 30% are found to be d
frosja888 [35]
<span>Answer:
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3 years ago
The daytime high temperature on the moon can reach 130°C. The nighttime low temperature can get as low as −110°C. What is the di
maks197457 [2]

Answer:

240

Step-by-step explanation:

remember that to get from positive to negative you have to go from positive to 0 then to negative .

however the easiest way of solving this is

add both the values , ignore the sign

130 + 110

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7 0
3 years ago
In triangle ABC, AC is a median. The value of AC is:<br><br> A. 34<br><br> B. 6 <br><br> C. 28
Levart [38]

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6 0
3 years ago
Help please. Having some trouble with this question
xeze [42]

Answer:

The answer to your question is 55 ft

Step-by-step explanation:

Data

Person's height = 5 ft

Person's shadow = 10 ft

Tree's height = ?

Tree's shadow = 110 ft

- Use the Thales' theorem to solve this problem

 Person's height / Person's shadow = Tree's height / Tree's shadow

- Substitution

                     5 / 10 = x / 110

-Solve for x

                     x = 5 (110) / 10

-Simplification

                     x = 550 / 10

-Result

                     x = 55 ft

-Conclusion

The tree is 55 ft height

5 0
3 years ago
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