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Umnica [9.8K]
3 years ago
9

Which value satisfies the inequality -2x + 8 + 5x > 2x + 1? A) -15 B) -10 C) -7 D) -5

Mathematics
2 answers:
larisa86 [58]3 years ago
8 0

It’s D.) -5

If you solve it you will know x>-7 and the only value that satisfies the equality is -5.

Novosadov [1.4K]3 years ago
5 0
<span>-2x + 8 + 5x > 2x + 1
3x + 8 > 2x + 1
         x > -7

answer
D) - 5</span>
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(x – 2) = –14(x – 8)
muminat

Isolate the variable by dividing each side by factors that don't contain the variable.

Exact Form:

x = 38/5

Decimal Form:

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Mixed Number Form:

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7 0
2 years ago
Need Help ASAP algebra 2​
Anastasy [175]

Answer:

a = √10

Step-by-step explanation:

a² + b² = c²

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hope this helps :)

7 0
3 years ago
Read 2 more answers
The data represented by the graph is normally distributed and adheres to the 68-95-99.7 rule. the standard deviation of this dat
jenyasd209 [6]

Answer:

i)

the standard deviation of this data is 2.2

ii) 84%

Step-by-step explanation:

We have been informed that the data represented by the graph is normally distributed and adheres to the 68-95-99.7 rule. This implies that we shall be dealing with the applications of the empirical rule.

In a normal distribution, the mean is also the mode as well as the median of the distribution. This implies that the mean is at the center of the distribution. In our case, the mean is 4.8. The vertical lines represents data points that lie 1, 2 and 3 standard deviations away from the mean.

From the graph, both 11.4 and -1.8 lie 3 standard deviations away from the mean on either side. We can thus use the following equation to solve for the unknown standard deviation;

mean + 3(sigma) = 11.4

where sigma is the standard deviation.

our mean is 4.8, therefore;

4.8 + 3(sigma) = 11.4

3(sigma) = 6.6

sigma = 2.2

ii)

In order to determine the percentage of the population that will fall below the mark of 7, we shall first determine how many standard deviations away from the mean the value 7 lies.

To do this, we can use the following equation;

4.8 + n(2.2) = 7

2.2n = 2.2

n = 1

Therefore, the data point 7 lies one standard deviation away from the mean to the right.

The percentage of the population that will fall below one standard deviation away from the mean is;

68 + 13.5 + 2.35 = 83.85%

Using the empirical rule

8 0
3 years ago
Find each unit rate 207,000 for 1,800ft
Olin [163]
207000 for 1800ft
? for 1ft
Step 1:
Cross multiply
1×207000=207000
Step 2:
207000÷1800=115
As a result, the answer will be 115 per foot. Hope it help!
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3 years ago
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B......hope this was helpful
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