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katrin [286]
2 years ago
12

7.

Mathematics
2 answers:
Nataly [62]2 years ago
7 0

Answer:

45

Step-by-step explanation:

f(×) = 15x

f(3) = 15(3)

= 45

give brainliest please I need it to level up

maksim [4K]2 years ago
7 0

Answer:

C. 3375

Step-by-step explanation:

c.3375  

since x is 3 you then type the equation like this 15^3 and multiply 15 three times  

...............................................................................................................................................

15^3

Given  :  for x =3.

To find : evaluate the function rule for the given value.

Solution : We have given  .

For x = 3.

Rule :  If  

Then   = 15*15*15.

 = 3375.

Therefore,  = 3375.

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Mekhanik [1.2K]

Answer:

Large Box = 18.5

Small Box = 15.75

Step-by-step explanation:

Let x = large box and y = small box

5x+6y=187

3x+2y=87

cancel out one equation

(5x+6y=187)•3=15x+18y=561

(3x+2y=87)•-5=15x+10y=435

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-15x-10y=-435

–––––––––––

 0+ 8y= 126

  8y÷8 =126÷8

y=15.75

Substitute y into either original equation

3x+2(15.75)=87

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3x+ 31.5-31.5=87-31.5

3x=55.5

3x÷3=55.5÷3

x=18.5

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3 years ago
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Step-by-step explanation:

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