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Anastaziya [24]
3 years ago
15

The following table represents a function.

Mathematics
2 answers:
ivanzaharov [21]3 years ago
6 0
The answer is B. Plug in the x values to check the y values.
netineya [11]3 years ago
4 0

Answer:

<h2>B.</h2>

Step-by-step explanation:

To find the right exponential function, we can just take x-values an replace them into the given functions. The one that give the correct y-values will be the answer.

For x=-2, let's see which function gives y=-\frac{1}{8}

y=8(4)^{x-1} \\y=8(4)^{-2-1}\\ y=8(4)^{-3}\\ y=\frac{8}{4^{3} }=\frac{1}{8}

You can observe that function A is not the correct one, because it gives a positive result. However, function B can actually be the answer, because it woud give the same y-value than A but negative, as we need. Let's see

y=-8(4)^{x-1}\\ y=-8(4)^{-2-1}\\ y=-8(4)^{-3}\\ y=-\frac{8}{4^{3} }=-\frac{1}{8}

Let's evalute for x=0

y=-8(4)^{0-1}=-8(4)^{-1}= -\frac{8}{4}=-2

Which is right.

Therefore, the right answer is B.

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Find the mean of 1,0,10,7,13,2,9,15,0,3
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Read 2 more answers
3. A dish contains 100 candies. Juan removes candies from the dish each day and no
iVinArrow [24]

Answer:

11

Step-by-step explanation:

If i am correct n= the days so with the days adding up day 10 juan would have 55 of the 100 candies, day 11 he would have 66. The statement said at least 64, so it would have to be 64 or the closet amount to 64 but it cannot be lower than 64. So there for 66 is the closest to the given amount, and in order for juan to get 64 he would need to take candies out for 11 days.

7 0
2 years ago
6x+4(150/x)=120 plz awnser for me
Gennadij [26K]

Answer:

x=10

Explaination:

4 0
3 years ago
I have 3 questions for math
Airida [17]

Answer:

  1. no question content
  2. (x, y) = (1/2, 4)
  3. (x, y) = (2, 10)

Step-by-step explanation:

1. No link, no question

__

2. Divide the first equation by 2 and substitute for y using the expression in the second equation.

  2x +(4x+2) = 5

  6x = 3 . . . . . . . . . subtract 2

  x = 3/6 = 1/2 . . . . divide by2

  y = 4(1/2) +2 = 4 . . . . substitute into the equation for y

The solution is (x, y) = (1/2, 4).

__

3. The solution using a graphing calculator is (x, y) = (2, 10). (see attached)

7 0
3 years ago
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