MATHEMATICS MIDDLE SCHOOL

What is the solution to the equation? 7x + 6 = –22

A. x = -64/7

B. x = -4

C. x = -16/7

D. x = 4

Answers

Answer 1
Answer: To solve the equation 7x+6 = - 22, we have to get the variable x alone on one side of the equation.

To do this, first we must subtract 6 from both sides, so that it cancels out with the +6 on the left side.

7x + 6 = - 22 = 7x = -28

Then, we must divide both sides by 7, so that we can get rid of the coefficient of the variable x on the left side of the equation.  

7x = -28 = x= -4

Therefore, your answer is 
B. x = -4
Answer 2
Answer: 7x + 6 = -22.

 +6 crosses equality sign and changes to -6

7x = -22 -6

7x = -28    Divide both sides by 7

7x/7 = -28/7

x = -4

Option B.

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Graph the system of inequalities presented here on your own paper, then use your graph to answer the following questions:y < 4x − 8y is greater than or equal to negative 5 over 2 times x plus 5Part A: Describe the graph of the system, including shading and the types of lines graphed. Provide a description of the solution area. (6 points)Part B: Is the point (5, −8) included in the solution area for the system? Justify your answer mathematically. (4 points)
Malachy and Paul win some money and share it in the ratio 4:5. Malachy gets £44. How much did Paul get?
X-12y=-210 and x-6=90
Which of these strategies would eliminate a variable in the system of equations?\begin{cases} -7x + 2y = 5 \\\\ 3x - 5y = -5 \end{cases} ⎩⎪⎪⎨⎪⎪⎧​ −7x+2y=53x−5y=−5​
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Two children share 2 1/2 chocolate bars with each child getting the same amount , how much does each child get

Answers

1.25 is the answer. all you do is take 2.5 and divide it by 2 and thats how i got the answer.
- - To solve you are going to solve in decimal form (It is easier than fraction dorm) 

(2.5)/(2)

=1.25 for your answer

Eduardo started a business selling sporting goods. He spent $7500 to obtain his merchandise, and it costs him $300 per week for general expenses. He earns $850 per week in sales. What is the minimum number of weeks it will take for Eduardo to make a profit?15 weeks

13 weeks

12 weeks

14 weeks

Answers

We may check it with each answer:

In 15 weeks he will earn $850 * 15 = $12 750
In 13 weeks he will earn $850 * 13 = $11 050
In 12 weeks he will earn $850 * 12 = $10 200
In 14 weeks he will earn $850 * 14 = $11 900

Now let's check how much he will spend for general expenses:

In 15 weeks he will spend $300 * 15 = $4 500
In 13 weeks he will spend $300 * 13 = $3 900
In 12 weeks he will spend $300 * 12 = $3 600
In 14 weeks he will spend $300 * 14 = $4 200

Now add $7500 to each option:

15 weeks: $4 500 + $7 500 = $12 000
13 weeks: $3 900 + $7 500 = $11 400
12 weeks: $3 600 + $7 500 = $11 100
14 weeks: $4 200 + $7 500 = $11 700

So:

In 15 weeks he will have expenses of $12 000 and he will earn $12 750
In 13 weeks he will have expenses of $11 400 and he will earn $11 050
In 12 weeks he will have expenses of $11 100 and he will earn $10 200
In 14 weeks he will have expenses of $11 700 and he will earn $11 900

In 12 and 13 weeks Eduardo won't earn enough money to have a profit, but he will obtain it after 14 and more weeks.

Answer: 14 weeks

I took this question in a quiz a couple of days ago and the correct answer is 14 weeks

How to you graph a linear equation when all they say is y=4 what to do

Answers

-- Find any point where y=4

-- Find another point where y=4

-- With your ruler, draw a line between the two points.
You have a horizontal line, and every point on it has y=4 no matter what 'x' is.

The equation for every straight line is [ y = mx+b ].

This is the line where (m = 0) and (b = 4).
A horizontal line that intersects the graph at (0,4)

Dakota read 130 pages over the weekend. Dajuan read 165 pages over the weekend. Which prime number do the prime factorization of 130 and 165 have in common?

Answers

Prime number is any number greater than 1 that cannot be formed by multipling any number besides 1 and itself.

They both only share the number 5.
5 is the final answer

Which fractions are greater than -5/16 ?

Answers

-5/16 

Our choices:-

A.-3/8
 
 
 B.-11/12
 
 
 C.-1/4
 
 
 D.-1/8

Let us get all of them with a LCD

-1*2 = -2
8*2 = 16

-2/16 is not bigger than -5/16

-11/12 is bigger than -5/16 because half of 16 is 8.

-1*4 = -4
4*4= 16

-4/16 is not bigger than -5/16

-1/8 is smaller than -5/16

Final answer: -11/12 is the only fraction bigger than -5/16
there are infinite fractions bigger than -5/16

Plz answer all 1.

(1 pt)


What is the area of the rectangle?





A.


0.9416 mi²


B.


1.8832 mi²


C.


1.95 mi²


D.


3.90 mi²


2.

(1 pt)


What is the area of the rectangle?





A.


40 km2


B.


40 m2


C.


26 km2


D.


26 m2


3.

(1 pt)
What is the area of the rectangle?




A.


1.125 yd²


B.


2.250 yd²


C.


4.50 yd²


D.


11.25 yd²


4.

(1 pt)
What is the area of a rectangular playground with a length of 84.5 ft and a width of 53 ft?


A.


137.5 ft²


B.


275 ft²


C.


4478.5 ft²


D.


44,785 ft²

5.

(1 pt)
Which measurement is the closest approximation of the rectangle’s area?




A.


16 m²


B.


32 m²


C.


65 m²


D.


70 m²

Answers

The area of a rectangle is equal to length times width.
There are no dimensions available here, so i have no idea what the questions are talking about.
but i can help u with 4.
so multiply 84.5 * 53, that equals 4,478.5
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