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adelina 88 [10]
3 years ago
13

Answer this question and I will mark you branilist

Mathematics
1 answer:
TiliK225 [7]3 years ago
3 0

Answer: F

Step-by-step explanation:

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Given f(x) = the quantity of x plus 7, divided by 5, solve for f−1(3)
Debora [2.8K]
<span>f(x) = the quantity of x plus 7, divided by 5f(x)= \frac{x+7}{5}


</span>

To get the inverse of any function f(x) [ just make sure that it passes the horizontal line test] follow the steps:

- Solve for x, i.e separate x in one side and the other terms in the other side, included f(x).

- Swap x and f(x).

- The result is the inverse of the original function f^{-1}(x)



So that:

5*f(x)=x+7\\~\\~\\5f(x)-7=x\\~\\~\\Swap~now\\~\\~\\f^{-1}(x)=5x-7



and for the value of 3:

f^{-1}(3)=5(3)-7=15-7=8


I hope that helps!




6 0
4 years ago
Read 2 more answers
Mrs. Julien’s and Mrs. Castillejo’s classes are selling cookie dough for a school fundraiser. Customers can buy packages of maca
Oksi-84 [34.3K]

Answer: the cost of one package of macadamia nut chip cookie dough is $1.5

the cost of one package of triple chocolate cookie dough is $2.5

Step-by-step explanation:

Let x represent the cost of one package of macadamia nut chip cookie dough.

Let y represent the cost of one package of triple chocolate cookie dough.

Mrs. Julien’s class sold 25 packages of macadamia nut chip cookie dough and 30 packages of triple chocolate cookie dough for a total of $112.50. This means that

25x + 30y = 112.5 - - - - - - - - - - - - -1

Mrs. Castillejo’s class sold 8 packages of macadamia nut chip cookie dough and 45 packages of triple chocolate cookie dough for a total of $124.50. This means that

8x + 45y = 124.5 - - - - - - - - - - -2

Multiplying equation 1 by 8 and equation 2 by 25, it becomes

200x + 240y = 900

200x + 1125 = 3112.5

Subtracting, it becomes

- 885y = - 2212.5

y = - 2212.5/- 885

y = 2.5

Substituting y = 2.5 into equation 1, it becomes

25x + 30 × 2.5 = 112.5

25x + 75 = 112.5

25x = 112.5 - 75 = 37.5

x = 37.5/25 = 1.5

The method used is the elimination method. It is more convenient to use.

8 0
4 years ago
Find all values of thetaθ​, if thetaθ is in the interval ​[0degrees°​, 360degrees°​) and has the given function value cot thetaθ
Kobotan [32]
In the first quadrant, 0-90 degrees, the angle whose cotangent  is is 45 degrees.  The only other quadrant where cot theta is 1 is 3rd quadrant.

The 2 angles are 45 and 180+45  = 225 degrees

Answer 45 , 225 degrees.
3 0
3 years ago
Find m angle T, rounded to the nearest degree
Butoxors [25]

Answer: First option.

Step-by-step explanation:

You can use the inverse tangent function to find the value of the angle T:

\alpha=arctan(\frac{opposite}{adjacent})

You can identify in the figure that:

\alpha=T\\opposite=RG=8\\adjacent=TR=15

Then, knowing these values, you can substitute them into  \alpha=arctan(\frac{opposite}{adjacent}).

Therefore, you get that the value of the angle T rounded to the nearest degree is:

T=arctan(\frac{8}{15})\\\\T=28\°

This matches with the first option.

6 0
3 years ago
Please help me I have need to get this done and I will be beaten if it is not finished
Alchen [17]
4. is correct
5. A is correct
6. B is correct 
4 0
3 years ago
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