Mathematics Middle School

Solve x + x + 2 + 2x = -2.
1
-1
0
-2

Answers

Answer 1

Answer:

[tex]x=-1[/tex]

Step-by-step explanation:

[tex]x + x + 2 + 2x = -2[/tex]

First, we need to collect like terms:

[tex]4x+2=-2\\4x=-4[/tex]

Then we divide both sides by 4:

[tex]\frac{4x}{4}=\frac{-4}{4}\\x=-1[/tex]

Answer 2

The answer is x = -1.

To solve this equation, you must collect like-terms by adding together x terms and numbers, and then rearrange to get x on one side and numbers on the other:

x + x + 2 + 2x = -2

4x + 2 = -2

- 2

4x = -4

÷ 4

x = -1

I hope this helps! Let me know if you have any questions :)

Related Questions

Find the value of x and y. Will mark brainliest.

Answers

Answer:

y=3, x=5

Step-by-step explanation:

18=6y, so divide both sides by 6 to get 3=y.

45=9x, so divide both sides by 9 to get x=5.

Answer:

x=5 y =3

Step-by-step explanation:

Opposite interrior angles have the same Number of degrees. So 9x=45. X has to be 5. y = 3 because 3 times 6 is 18. Which is the same number as the opposite vertical side.

Five-sixths of a number is 45.
Find the number.

Answers

Answer: The number is 54!!!

Hope it helps!!!



Step-by-step explanation:

Let's call the number x.

So, 5/6 (of or multiplication) = 45

5x = 45* 6

x = 270/5

x = 54

The answer is 54. Hope this helps!

Help please
If steak costs $8.45 per pound, what will be the total cost of 0.8 pounds of steak?

Answers

Answer:

$6.76

Step-by-step explanation:

Multiply 8.45 by 0.8 and you will get 6.76

What's the numerator for the following rational
expression?
7/v+3/v=?/v

Answers

Answer:

54inches 43inches are the 53364inches rye 5t337 the earth stud is 37feet of the 368feet

Answer:

10

Step-by-step explanation:

they all have the same denominator so the only focus is adding the 7+3

This table shows the area in inches of four rectangular scraps of fabric.

What is the median of the sizes of the four scraps of fabric?

78 in²

80 in²

82 in²

84 in²

table:
Scrap Area (in²)

A 84
B 72
C 80
D 84

Answers

Answer: 82

Step-by-step explanation:

(80+ 84) / 2

164/2

Answer:

82

Step-by-step explanation:

A laptop is in the shape of a rectangular prism. The laptop has a length of 14 inches, a width 10 inches, and a height of 1 inch. Eryday it's the volume of the laptop?

Answers

Answer: Volume is 140

Step-by-step explanation:

Find the range of the data in the box plot below.​

Answers

Answer:

Range: 20

General Formulas and Concepts:

Statistics

Range - the difference between the highest and lowest point

Step-by-step explanation:

Step 1: Define

Find values from box-and-whisker plot.

Highest point recorded = 25

Lowest point recorded = 5

Step 2: Find Range

Set up:                    25 - 5Subtract:                 20

Pentagon ABCDE is rotated 90 degrees counterclockwise about the origin to form pentagon A’ B’ C’ D’ E’. What is the y-coordinate if point C’?

Answers

Answer:

4

Step-by-step explanation:

When rotating a point 90 degrees counterclockwise about the origin the  point A(x,y) becomes A'(-y,x).

Point C has coordinates of (4, 3)

New coordinates will be C'(-3, 4)

So the answer is:

y-coordinate of C' is 4

Answer:

4

Step-by-step explanation:

Hope this helped!

help asap please tyyy

Answers

Answer:

I believe its the blue (42 u^2)

Step-by-step explanation:

Answer:

It would be 42u^2.

Step-by-step explanation:

This is because there are 42 squares if you count them all up.

Or you can do (9)*2 + (6)*4 to get it.

How many different outcomes can happen from spinning a four-section spinner twice, according to the diagram given?
red
yellow
red
yellow
blue
green
red
yellow
blue
green
red
yellow
blue
green
red
yellow
blue
green
blue
green
2000 Gayriyon, no
4
8
12
16

Answers

8 different outcomes

A circle has a circumference of 150 meters. What is the measure of its radius? Round
to the nearest tenth.
circumference 150 m



Answers

Answer:

23.9 is the radius

Step-by-step explanation:

150/3.14 =47.7707006369

47.7707006369/2 = 23.8853503185

Round to nearest tenth = 23.9

Hope this helps!

Answer:

23.9

Step-by-step explanation:

What is the answer to this question?

Answers

Answer:

The answer is 480 in^3

Step-by-step explanation:

Right rectangular prism calc - find V

volume = h * w * l where h is prism height, w is its width and l its length.

Identify the value of r and a1 for each geometric
series.
8 + 4 + 2 + 1 + ...

Answers

Answer:

Step-by-step explanation:

Answer:A,E

second part 1.5,2. .5,8

Step-by-step explanation:

0.00003
2 x 10-5
=
?

Answers

Answer:

[tex]0.00003=3[/tex]×[tex]10^{-5}[/tex]

[tex]2[/tex]×[tex]10^5[/tex] = [tex]200,000[/tex]

Step-by-step explanation:

When working with scientific notation, you are either given a decimal or whole number. The point of scientific notation is to rewrite a number in a more simplified form.You need to change the number so that there is one number on the left side of the decimal. An exponent is used to describe the change in the number. For example:

0.00003

In order to get one number to the left of the decimal, you need to move the decimal to the right 5 spaces. Since the zeros are to the left of the primary number (3), the exponent will be negative. The exponent itself will be the spaces you moved:

[tex]3[/tex]×[tex]10^{-5}[/tex]

The ten is used because of the decimal places you are moving. When you multiply a number by 10, you add a zero. For example:

[tex]2[/tex]×[tex]10^5[/tex]

Since there is a 10, we will be adding in zeros. The exponent determines how many zeros will be added. Since it is a positive number, the numbers will be to the right of the primary number:

200,000


Which of the following has contributed to flooding in India?
I. India receives an excessive amount of rainfall.
II. India's coastal regions experience many cyclones.
III. India's deforestation makes it harder for soil to absorb water.
CA
II and III
B. Tand III
OC. I and II
D. I, II, and Ill

Answers

Answer:

| and ||

Step-by-step explanation:

Answer:

The answer is I, II, and III

Step-by-step explanation:

who can help me find the volume of this planets ?

Answers

Answer:

mercury V= 6.08×10^10

venus V=9.29×10^11

earth V= 1.09×10^12

mars V= 1.63×10^11

jupiter V= 1.43×10^15

saturn V= 8.27×10^14

uranus V= 6.83×10^13

A square picture frame encloses an area of 29 square inches. Its owner claims that the frame sides are between 5.25 and 5.35 inches long. Is the owner correct? Why or why not?

Side length = ______ inches

Answers

Answer:34.2479 inches

Step-by-step explanation:

And: 34.29cm inches


Which statement best summarizes the main idea of the above passage from
"An Indian Father's Plea"?
A. Wind-Wolf learned much of what he learned from public school.
B. Wind-Wolf has a different educational background than many
other children.
O C. Wind-Wolf looks and acts differently than the other children in his
school.
D. Wind-Wolf will often answer questions at school using answers
he learned from those in his tribe.

Answers

Answer:

Had to look for the missing passage and here is my answer. Based on the passage from  "An Indian Father's Plea", I can say that the statement that shows the best summary about this is option D: Wind–Wolf has begun denying his native culture because it conflicts with his school culture. Hope this helps.

Step-by-step explanation:

Bruce and Krista are going to buy a new furniture set for their living room. They want to buy a couch, a coffee table, and a recliner. They have narrowed it down so that they are choosing between 4 couches, 5 coffee tables, and 9 recliners. How many different furniture combinations are possible?

Answers

Answer:

There are 180 possible combinations for the furniture.

Step-by-step explanation:

4*5*9=180

Answer

180 combinations

Step-by-step explanation:

To figure out the number of combinations, we multiply 4*5*9. 4*5 equals 20 and 20*9 equals 180.

Mario writes the equation (r + y)2 = z2 + 4(1/2ry) to begin a proof of the Pythagorean theorem. Use the drop-down menus to explain why this is a true equation.

Answers

Answer:

x+y

Z2

1/2xy

Step-by-step explanation:

(x+y)^2 finds the area of the outer square by squaring its side length.

z^2 + 4 (1/2xy) finds the area of the outer square by adding the area of the inner square and the four triangles.

How much will the guitar be worth in 10 years?

Answers

Answer:

$44487

Step-by-step explanation:

If you plug in 10 for t, you are left with the following equation:

[tex]V=12000(1.14)^{10}=12000\cdot 3.7072\approx 44487[/tex]. Hope this helps!

Answer: $44,487

Step-by-step explanation:

To solve this, substitute t (the variable for time in the equation) with 10 to represent the value of the guitar after 10 years.

[tex]V = 12000(1.14)^{10}\\V = 12000*3.7072\\\\V = 44487[/tex]

The guitar will be worth $44,487 in 10 years.

The function g(n) = n2 − 16n + 69 represents a parabola.

Part A: Rewrite the function in vertex form by completing the square. Show your work. (6 points)

Part B: Determine the vertex and indicate whether it is a maximum or a minimum on the graph. How do you know? (2 points)

Part C: Determine the axis of symmetry for g(n). (2 points)

Answers

Answer:

Step-by-step explanation:

A) y + ? = n^2 - 16n + ? + 69

y + 64 = n^2 -16n + 64 + 69

y + 64 = (n-8)^2 + 69

y = (n-8)^2 + 5

B) vertex is (8,5) because the value of a vertex is always (h,k) from the parent vertex function:

y = a(x-h) + k

it's a minimum only because the (a) value is positive

C) axis of symmetry = 8

2. Simplify.
–48
O A. 4213
OB. -4213
O C.-4v3
OD. 4V3

Answers

D
48
2 24
12 2
6 2
3 2
2•2V3
4V3

PLEASE HELP...SOLVE FOR VOLUME

Answers

Answer:

to get volume you have to do this base x height

Step-by-step explanation:

12 x 8 is 96 that the base

next base times height  which is 1996.8 however since the shape is a triangle and not a square you have to divide by 2 so the answer is 998.4 m^2

Answer:

volume = 12* 19.2*8/2 = 921.6 m3

Step-by-step explanation:

20.8^ 2 - 8^ 2 = a^2 = 19.2^ 2

volume = 12* 19.2*8/2 = 921.6

Use the diagram below to find the distance between points (-6, 5) and (-1, -7).

A. 13 units

B. 19 units

C. 6 units

D. 17 units

Answers

Answer:

A. 13 units

Step-by-step explanation:

using distance formula

(x2-x1)^2 + (y2-y1)^2 in roots

(-1+6)^2 + (-7-5)^2 in roots

5^2 + 12^2 in roots

25 +144 in roots

169 in roots

13 units

4 blue marbles, 3 green marbles, 7 yellow marbles, and 2 red marbles are in a bag. What is the probability of drawing a blue marble, putting it back in, then drawing a red marbe?

Answers

Answer:

0.375 in fraction is 38.

4/16 + 2/16 = 0.375

Step-by-step explanation:

Find the exact solution of the equation. 7^x=8

Answers

Answer:

[tex] log_{7}(8) [/tex]

Are my answers correct?

Answers

Answer:

I would have got the same answers so probably yea

Step-by-step explanation:

Answer:

Yes

Step-by-step explanation:

According to my understanding I believe you are correct!

Write an equation of the line that passes through (2, −2) and is parallel to the line y=3x+9.

Answers

Step-by-step explanation:

Parallel lines have the same slope, so we know that our line will have a slope of 3 because y = 3x + 9 has a slope of 3. Now, we can use the point-slope formula of the line to find the equation.

We have y - y₁ = m (x - x₁)          (m = 3, x₁ = 2, y₁ = -2)

               y- (-2) = 3 (x - 2)

               y + 2 = 3x - 6

               y = 3x - 8

Hope this helps!

Answer:

y = 3x - 8

Step-by-step explanation:

We know that parallel lines have the same gradient. In this situation we want want to work the equation of the line that is parallel to y = 3x + 9 and passes through ( 2 , - 2 ). We know that equations of lines usually go in the format of    y = mx + c

↔ Where 'm' is the gradient / slope

↔ Where 'c' is the y - intercept

Using the information in the first sentence we can set up an equation to find the value of 'c'

⇒ Form the equation

→ y = 3x + c

⇒ Substitute ( 2 , -2 ) into the equation to find the value of c

→ -2 = 6 + c

⇒ Minus 6 from both sides to isolate c

→ -8 = c

⇒ Put the value of c back into y = 3x + c

→ y = 3x - 8

So equation of the line that passes through ( 2, −2 ) and is parallel to the line y = 3x + 9 is y = 3x - 8

Factor the polynomial.

216x^3-64

Answers

(6x-4) (36x^2 +24x +16)
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