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Lady_Fox [76]
2 years ago
9

Given that f(x)=x/2+5, a)find f(2) b)find f^-1(x) c)find f^-1(5)

Mathematics
1 answer:
Aleks04 [339]2 years ago
8 0
A) 6
b) x/f
c) 5/f

Mark brainliest please


Hope this helps you
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Dale has three dollars more than twice the amount of money that Leo has.
MrMuchimi

Answer:

If Leo has d dollars, then Dale has 2d + 3

Step-by-step explanation:

If we say Leo has x amount of money. Now we say that Dale has $3 more (x + 3) then twice the amount of money Dale has. Twice the amount of money Dale has is equal to 2x. And so by having three more dollars than this amount would be equal to 2x + 3 or in this case 2d + 3. It may be more helpful to read the question and attempt it on your own before reading the options bc they may confuse you.

Hope this helps!

5 0
3 years ago
What is the distance between (-6,8) and (-3,9)
zaharov [31]
Use distance formula

  = sqrt ( (y2-y1)^2 + (x2-x1)^2)   where the 2 points are (x1,y1) and (x2,y2).

so answer is  sqrt ((9-8)^2 + ((-3--6)^2)  = sqrt (1 + 9) = sqrt 10

answer is sqrt 10 or 3.16 to nearest hundredth.


5 0
3 years ago
Read 2 more answers
After raining for 34 of an hour, a rain gauge is 25 filled. If it continues to rain at that rate for 15 more minutes, what fract
ivann1987 [24]

Answer:

\textbf{Fraction of gauge filled = }\bf\frac{8}{15}

Step-by-step explanation:

This equation does not represent the situation because to find the fraction of the rain gauge we need to : divide the fraction of gauge filled by the raining fraction of an hour

But, Diego wrote the incorrect division equation so, it does not represent the current situation.

Now, to find the required division and multiplication equations :

\frac{3}{4}\text{ fraction of an hour = }\frac{3}{4}\times 60=\text{ 45 minutes}\\\\\text{ Now, the rain continues to rain for 15 minutes more}\\\implies \text{The total raining time = 45 + 15 = 60 minutes}\\\\\text{So, we need to find the fraction of gauge filled in 60 minutes}\\\\\text{Fraction of gauge filled in 45 minute = }\frac{2}{5}\\\\\text{Fraction of gauge filled in 1 minute = }\frac{\frac{2}{5}}{45}=\frac{2}{5\times 45}\\\\\text{Fraction of gauge filled in 60 minutes = }\frac{2}{5\times 45}\times 60=\bf\frac{8}{15}

\text{Division equation = }\frac{\text{fraction of gauge filled}}{\text{raining fraction of an hour}}\\\\\textbf{Division Equation : }\frac{\frac{2}{5}}{\frac{3}{4}}=\frac{2}{5}\times \frac{4}{3}=\frac{8}{15}\\\\\text{Multiplication Equation = Fraction of gauge filled in 1 minute × 60}\\\\\textbf{Multiplicatiuon Equation : }\frac{2}{225}\times 60=\frac{8}{15}

4 0
3 years ago
Find the rational solution of x3 – 3x2 + x + 5 = 0. Show your use of the Rational Zero Theorem to receive credit!
tigry1 [53]
       A zero of a function is a number that, when plugged in for the variable, makes the function equal to zero.
P ( x ) = 0
As P ( - 1 ) = 0:
( x³ - 3 x² + x + 5 ) : ( x + 1 ) = x² - 4 x + 5
 -x³ -  x²
--------------
      - 4 x² + x
        4 x²+ 4 x
       --------------
                 5 x + 5
                -5 x -  5
                ------------
                          0
The remaining trinomial: x² - 4 x + 5 doesn´t have rational roots.
Answer: x = -1
5 0
3 years ago
New ear buds cost $48. There is a 10% discount. What is the new cost?
Pachacha [2.7K]

Answer:

43.2

Step-by-step explanation:

10%=0.1 so subr=tract and you get 43.2

5 0
3 years ago
Read 2 more answers
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