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mariarad [96]
3 years ago
13

Answer quick for brainliest

Mathematics
1 answer:
olasank [31]3 years ago
4 0

Answer:

sales tax is $1 and totel cost is $21

Step-by-step explanation:

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Which is a simplified form of the expression -4(n + 1) – (n + 2)?
Nadya [2.5K]

Answer:

-(5 n + 6)

Step-by-step explanation:

Simplify the following:

-4 (n + 1) - (n + 2)

-4 (n + 1) = -4 n - 4:

-4 n - 4 - (n + 2)

-(n + 2) = -n - 2:

-4 - 4 n + -n - 2

Grouping like terms, -4 - 4 n - 2 - n = (-4 n - n) + (-4 - 2):

(-4 n - n) + (-4 - 2)

-4 n - n = -5 n:

-5 n + (-4 - 2)

-4 - 2 = -(4 + 2):

-5 n + -(4 + 2)

4 + 2 = 6:

-5 n - 6

Factor -1 out of -5 n - 6:

Answer: -(5 n + 6)

4 0
3 years ago
Read 2 more answers
Owners of a recreation area are filling a small pond with water. Let y represent the total amount of water in the pond (in liter
devlian [24]

Answer:

  1. 32
  2. 400

Step-by-step explanation:

Lets start by defining the numbers in the equation.

This  equation is in slope-intercept form meaning that it is y=mx+b or y = b+mx they are both the same

In slope-intercept form,

  • m = slope or rate
  • and b = y-intercept

Th equation is y=400+32x so now we know

  • b=400
  • and m=32

For the first question the change per minute is the rate so it is <u>32.</u>

For the second question the starting amount is the same as the y-intercept so it is <u>400.</u>

4 0
3 years ago
In order to form a negation, just add "not" to a statement or take "not" out of a statement if it already exists.
Mnenie [13.5K]

<u>Answer:</u>

The correct answer option for this is: False.

<u>Step-by-step explanation:</u>

We are given the following statement which we are to determine whether its true or false:

<em>In order to form a negation, just add "not" to a statement or take "not" out of a statement if it already exists.</em>

To form a negation, we add the word 'not' to a statement - this part of the given sentence is true.

While 'or take "not" out of a statement if it already exists' is false which makes the whole sentence false.

3 0
4 years ago
It's really important, please help
slavikrds [6]

<em>The question isn't complete. This is just part of the question</em>

<em>So please send the whole question together.</em>

5 0
3 years ago
Read 2 more answers
Mrs. cugini collected data on the hand span length and height of each of her Algebra 1 students.
dem82 [27]
<h3>a. slope = \displaystyle m=\frac{15}{2}</h3><h3>b. slope = m = positive = positive correlation =  two sets of data increase together</h3><h3>Further explanation</h3>

Scatter plot shows the relationship between data

We can use Regression to make lines on the chart or you can also make lines with the principle as close as possible to all points

Regression

\displaystyle m=\frac{N\sum (xy)-\sum x\sum y }{ N\sum (x^2)-(\sum x)^2}

Because data is in the form of numbers from the hand span length and height of each of students. not displayed clearly, then we make a line directly by making points on the graph above and below the line as much as possible to be balanced

We specify 2 points that are crossed by a line, for example:

(6.45) and (8.60)

slope (m) = change in y / change in x

\displaystyle m=\frac{60-45}{8-6}\\\\m=\frac{15}{2}

Slope has a positive value, and shows a positive correlation where the tendency of the number rises simultaneously, or can be concluded:

<em>tall students will have the long hand span length too</em>

<h3>Learn more</h3>

Line equation

brainly.com/question/10955762

Keywords : line equation, slope, regression, the hand span length and height, graph, Scatter plot

#LearnWithBrainly

7 0
3 years ago
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