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stellarik [79]
3 years ago
8

Does the mapping diagram represent a function? Why or why not?

Mathematics
1 answer:
borishaifa [10]3 years ago
8 0

Answer:

The answer is B

Step-by-step explanation:

In a function every X must have only 1 Y. In this example the x 3 has to y's 10 and 5, therefore making it not a function.

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. He has $75 in his checking account and has already spent $53.86 on food. Which inequality represents how much Jeremy has left
mixas84 [53]
X= 75-53.86<span>
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4 0
3 years ago
The power generated by an electrical circuit (in watts) as a function of its current x xx (in amperes) is modeled by P ( x ) = −
marysya [2.9K]

Given:

The power generated by an electrical circuit (in watts) as a function of its current x (in amperes) is modeled by

P(x)=-15x(x-8)

To find:

The current which will produce the maximum power.

Solution:

We have,

P(x)=-15x(x-8)

P(x)=-15x^2+120x

Differentiate with respect to x.

P'(x)=-15(2x)+120(1)

P'(x)=-30x+120      ...(i)

To find the extreme point equate P'(x)=0.

-30x+120=0

-30x=-120

Divide both sides by -30.

x=4

Differentiate (i) with respect to x.

P'(x)=-30(1)+(0)

P'(x)=-30 (Maximum)

It means, the given function is maximum at x=4.

Therefore, the current of 4 amperes will produce the maximum power.

7 0
3 years ago
Please help me find all the missing angles in the two problems
Yakvenalex [24]

the answer for the second problem is x=99 degrees and y= 261 degrees

dunno the first problem :/

3 0
2 years ago
Enter the y coordinate of the solution to this system of equations. <br> -2x+3y=-6<br> 5x-6y=15
julia-pushkina [17]
Y coordinate on solving both equations comes out to be 0
-2x+3y=-6
3y = -6+2x
put the value of 3y in equation 2nd
5x-2(-6+2x) =15
5x+12-4x = 15
x=3
put value of X in 3y = -6+2x
3y = -6+2*3 = -6+6 = 0
thus y = 0
7 0
3 years ago
If T(n) = 3n -5 what is the 3rd term
PtichkaEL [24]
Tn=3n-5 therefore: T(3)=3(3)-5 T(3) =4
4 0
3 years ago
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