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oksian1 [2.3K]
2 years ago
6

HELLPPP!!! ASAPPP WHAT IS THE EQUATION FOR THE RED GRAPH?!?!

Mathematics
1 answer:
prisoha [69]2 years ago
8 0

Answer: The correct answer is D.

Step-by-step explanation: A and B is incorrect because the x value is 0. C is incorrect because the y-intercept is 3, not -3. Hence, it is D.

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One number is four times another number. The sum of their reciprocals is 1/4 . What is the answer
Yakvenalex [24]
Using the information from the question, one can construct two equations:

4 z = x  ...  (1)

\frac{1}{z}  +   \frac{1}{x}   ... (2)

by substituting (1) into (2) to find x

\frac{1}{z} +  \frac{1}{4z}  =   \frac{1}{4}

\frac{5}{4z}  =   \frac{1}{4}

\frac{5}{4z}  =   \frac{1}{4}  

\frac{4z}{5}  =   \frac{4}{1}

\frac{4z}{1}  =   \frac{20}{1}

z =   \frac{20}{4}

⇒ z = 5

By substituting value of z into (1)

⇒ 4 (5) = x

⇒ x = 20

Thus the two numbers are 5 & 20 



4 0
4 years ago
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Which function below is the inverse of f(x) = X2 - 25?
viva [34]

Answer: f^{-1}(x)=  \sqrt{x+25} and f^{-1}(x)= - \sqrt{x+25}

Step-by-step explanation:

   To find the inverse, we will set f(x) equal to y, swap the x and y values, and then solve for y.

   Given:

f(x) = x² - 25

   Equal to y:

y = x² - 25

   Swamp x and y values:

x = y² - 25

   Add 25 to both sides of the equation:

y² = x + 25

   Square root both sides of the equation:

y=  \sqrt{x+25} and y=  -\sqrt{x+25}

   Interval notation:

f^{-1}(x)=  \sqrt{x+25},\text{and}\;f^{-1}(x)=  -\sqrt{x+25}

8 0
1 year ago
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Can someone please explain this in depth?
frosja888 [35]

Answer:

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Step-by-step explanation:

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3 years ago
Please help this is Factor Theorem <br><br><br><br><br><br>It's letter b thank you!​
Over [174]

Answer:

yea

Step-by-step explanation:

4 0
3 years ago
A prism has the base given below. If the height of the prism is 9 units, what is the volume of the prism
baherus [9]
5 square units let me know if it’s correct hun
8 0
3 years ago
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