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olga55 [171]
4 years ago
7

What is the solution of x−7>1?

Mathematics
1 answer:
ratelena [41]4 years ago
8 0

Answer: x > 8

Step-by-step explanation: To solve the inequality x - 7 > 1, our goal is the same as it would be if we were solving an equation, to get <em>x</em> by itself on one side.

So here, since 7 is being subtracted from <em>x</em>, we need to add 7 to both sides of the inequality to get x > 8. We then write our answer in <em>set notation</em>, as the set of all x’s such that x > 8, shown below.

<h2>{x : x > 8}</h2>

It's important to understand that this solution set means that any number greater than 8 is a solution to this inequality.

For example, 9, 10, 28, 872, 642,000, and so on

are all solutions to this inequality.

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Answer:

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3 years ago
Suppose you draw a single sample of size 64 from a large population and measure its sample proportion. What is the margin of err
MissTica

Answer:

(b) 6.25%

Step-by-step explanation:

Margin of error is the chances of percentage deviation that may differ from original population data. The margin of error for 95% confidence interval can be 6.25%. To find this we divide population standard deviation with square root of sample size. The margin of error is the estimate of the deviation from actual and real value of population.

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4 years ago
Find the area of quadrilateral ABCD in each case.<br> HElp PLEase ASAP
ahrayia [7]

<h2><u>PLEASE MARK BRAINLIEST!</u></h2>

Answer:

Let's see...

Step-by-step explanation:

*Note: we can't find the exact area of the shaded figure right off the bat, we have to find the area of a bigger figure and divide it by 2.

<h3>The coordinates of the bigger figure:</h3>

A = (0,0)

B' = (0,4)

C = (5,4)

D' = (5,0)

Note: the little [ ' ] next to the B and D indicate that it is not the same coordinate as B and D, just that those points would be the same as point B and D.

<h3>That being said, what is the area of the bigger figure?</h3>

A =  l * w

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A = 20 units²

<h3>Now, divide the Area by 2:</h3>

A = 20 ÷ 2

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I hope this helps!

- sincerelynini

4 0
3 years ago
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4 years ago
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What is the function f(x) = 2(x + 6), find x if f(x) = 22
lord [1]

Answer:

<h3>x = 5</h3>

Step-by-step explanation:

f(x) = 2(x + 6)

f(x) = 22

thereofre we have the equation:

2(x + 6) = 22      <em>use distributive property</em>

2x + 12 = 22     <em>subtract 12 from both sides</em>

2x = 10     <em>divide both sides by 2</em>

x = 5

3 0
3 years ago
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