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Alona [7]
3 years ago
12

W (n)= -2n-2; find w (9)

Mathematics
1 answer:
alexira [117]3 years ago
8 0
The answer is: w(9) = -20

explanation/work:
w(n) = -2n-2
w(9) = -2(9)-2
w(9) = -18-2
w(9) = -20
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lubasha [3.4K]

There are 38 triangles in the figure.

4 0
4 years ago
The inequality x - y &gt; 0 is satisfied by point (-1, 1).<br><br> T/F
Mekhanik [1.2K]

-2 is not greater than zero, so, the point don't satisfy the inequality  x - y > 0

Hence correct option is false.

Step-by-step explanation:

We need to identify the point (-1,1) satisfies the inequality  x - y > 0

Solving:

The value of x = -1 and y =1

Putting values in the inequality:

x-y>0\\-1-1>0\\-2>0\,\,false

-2 is not greater than zero, so, the point don't satisfy the inequality  x - y > 0

Hence correct option is false.

Keywords: Solving inequalities

Learn more about Solving inequalities at:

  • brainly.com/question/1465430
  • brainly.com/question/6703816
  • brainly.com/question/11788572
  • brainly.com/question/4192226

#learnwithBrainly

7 0
4 years ago
What are the solutions of this equation 16-2x^2=-64
xenn [34]

Answer:

x = ± 2\sqrt{10}

Step-by-step explanation:

Given

16 - 2x² = - 64 ( subtract 16 from both sides )

- 2x² = - 80 ( divide both sides by - 2 )

x² = 40 ( take the square root of both sides )

x = ± \sqrt{40} = ± \sqrt{4(10)} = ± 2\sqrt{10}

5 0
4 years ago
a market research firm used a sample of individuals to rate the purchase potential of a particular product before and after the
enot [183]

Answer and explanation:

Answer:

Two sample t test

Explanation:

The test that could be used here is the two sample t test. The two sample t test compares two groups to ascertain if there is an average significant different between the two groups being compared, also making sure the result of difference is not random. For instance to test the above example, the two sample t test compares the group before they watch the commercial with the group after the commercial to know if there is a significant difference between the two groups.

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3 years ago
Ella completed 3/8 of a puzzle during recess on Tuesday. Joy completed two six of the same puzzle during recess on Wednesday. ho
gavmur [86]
Well u have to make the denominator the same so u multiply 3/8 by 3 and get 9/24, then multiple 2/6 by three and get 8/24. Add them, 9/24+8/24 and u get 17/24
6 0
3 years ago
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