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Viefleur [7K]
3 years ago
5

Is this right ? Im honestly confused

Mathematics
1 answer:
fgiga [73]3 years ago
3 0

Answer:

In step by step

Step-by-step explanation:

For #1, everything is perfect.

For #2, you wrote your functions out incorrectly, but your x input and y output are correct

#3 is a little messed up.

Your function is f(x)=-3x+1. Your given x's are -3, -1, 0, 1, 2, and 3. Plug all of these in.

1. f(-3)=-3(-3)+1

  • f(-3)=9+1
  • f(-3)=1

2. f(-1)=-3(-1)+1

  • f(-1)=3+1
  • f(-1)=4

3. f(0)=-3(0)+1

  • f(0)=0+1
  • f(0)=1

4. f(1)=-3(1)+1

  • f(1)=-3+1
  • f(1)=-3

5. f(2)=-3(2)+1

  • f(2)=-6+1
  • f(2)=-5
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Answer:

we will fail to reject the null hypothesis and conclude that the mean pressure is not different from 4.7 psi

Step-by-step explanation:

Let's first define the hypothesis;

Null hypothesis: H0: μ = 4.7

Alternative hypothesis: Ha: μ ≠ 4.7

We have;

Sample size; n = 110

Sample mean; x¯ = 4.6

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Standard deviation; σ = √0.64 = 0.8

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z = (4.6 - 4.7)/(0.8/√110)

z = -0.1/0.0763

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2 years ago
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marishachu [46]

Answer:

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3 years ago
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neonofarm [45]

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4 0
2 years ago
adult tickets to a play cost $22. tickets for children cost $15. tickets for a group of 11 people cost a total of $228. write an
Tom [10]

Adults = 9

Children = 2


Let x be the number of adults.

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7x = 63

7x / 7 = 63 / 7

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11 - x = 11 - 9 = 2 number of children.


To check:


22x + 15(11-x) = 228

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(not my answer btw)

3 0
3 years ago
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Answer:

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step-by-step explanation:

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