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stepladder [879]
3 years ago
13

What expression represents 7 times the sum of a number and 8?

Mathematics
2 answers:
PolarNik [594]3 years ago
3 0

7(n + 8 You use the parentheses to know that that the adding comes first because usually in PEMDAS multiplication comes first.

Dmitry_Shevchenko [17]3 years ago
3 0

Answer:

y=7(8+x)

Step-by-step explanation:

not much to explain sry.

pls give thx and brainliest wannna level up

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Suppose that the scatterplot shows the response time from websites when computers communicate through the Internet. Paul use the
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3 years ago
The manager of a warehouse would like to know how many errors are made when a product's serial number is read by a bar-code read
Bond [772]

Answer:

(a)\ \bar x =20.5

(b)\ \sigma = 14.54

Step-by-step explanation:

Given

x: 36, 14, 21, 39, 11, 2

Solving (a): The mean of the 6 samples.

This is calculated as:

\bar x = \frac{\sum x}{n}

So, we have:

\bar x =\frac{36+ 14+ 21+ 39+ 11+ 2}{6}

\bar x =\frac{123}{6}

\bar x =20.5

Solving (b): The sample standard deviation.

This is calculated using:

\sigma = \sqrt{\frac{\sum(x - \bar x)^2}{n-1}}

So, we have:

\sigma = \sqrt{\frac{(36 - 20.5)^2 + (14 - 20.5)^2 + (21 - 20.5)^2 + (39 - 20.5)^2 + (11 - 20.5)^2 + (2 - 20.5)^2}{6-1}}

\sigma = \sqrt{\frac{1057.5}{5}}

\sigma = \sqrt{211.5}

\sigma = 14.54

7 0
3 years ago
A scale model of the Empire State Building uses the scale 1 inch : 50 feet. If the model is 25 inches tall, how tall is the Empi
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Answer: 1250 feet

Step-by-step explanation: 50 x 25 = 1250

7 0
3 years ago
[Question Deleted 5/15/2021]
pav-90 [236]

[Question Deleted 6/15/2021]

lets play this

anyone can do it ima go to sleep lol

7 0
3 years ago
Someone help me with this question please
telo118 [61]

Answer:

b = square root of 44 or approx. 6.6

Step-by-step explanation:

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2 years ago
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