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Ilya [14]
3 years ago
13

Simplify 6 - 4[x + 1 - (y+ 3)] +

Mathematics
1 answer:
Ad libitum [116K]3 years ago
3 0

Answer:

14 - 4x + 9y

Step-by-step explanation:

6-4[x+1-(y+3)]+6y

6-4[x+1-y-3]+6y

6-4[x-2-y]+6y

6-4x+8+4y+6y

14-4x+10y

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Answer:

D. 13

Step-by-step explanation:

x = 5

2 x 5 + 3 = 13

5 + 8 = 13

meaning the side length has to be 13, also.

5 0
3 years ago
What is the integer of 160 feet above sea level
Olenka [21]
Not sure what you're asking for but the Integer of 160ft above sea level will just be +160
3 0
2 years ago
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To study the effectiveness of a certain adult reading program, researchers will select a random sample of adults who are eligibl
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c) A matched-pairs t-interval for a population mean difference

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6 0
3 years ago
A tennis racket at at sport city costs $180 and is discounted 15% the same model racket costs$200 at tennis world and is on sale
MaRussiya [10]
Mate, stop repeating questions, wait until your question has been answered.


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Therefore Sport City offered the better deal.
4 0
3 years ago
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A set of data with a mean of 53, and a standard deviation of 6.2 is normally distributed. Find the value of a data point that is
Evgesh-ka [11]

The value of a data point that is -2 standard deviations from the mean

so, 40.6 to 65.4.

<h3>What is the empirical rule?</h3>

According to the empirical rule, also known as the 68-95-99.7 rule, the percentage of values that lie within an interval with 68%, 95%, and 99.7% of the values lies within one, two, or three standard deviations of the mean of the distribution.

P(\mu - \sigma < X < \mu + \sigma)  \approx 68\%\\P(\mu - 2\sigma < X < \mu + 2\sigma)  \approx 95\%\\P(\mu - 3\sigma < X < \mu + 3\sigma)  \approx 99.7\%

From the empirical rule, we know that for 95% we are in 2 standard deviations of the mean. so:

= 53- 6.2- 6.2

= 40.6

The value of a data point that is -2 standard deviations from the mean

53 + 6.2 + 6.2

= 65.4

Learn more about the empirical rule here:

brainly.com/question/13676793

#SPJ2

7 0
2 years ago
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