Mathematics Middle School

Solve for X
3(x-4)=12.

Answers

Answer 1

Answer: x=8

Step-by-step explanation:

3(x-4)=12

Distribute the 3 into the parathesis'

3x-12=12

   +12 +12   on each side

3x=24

Divide by 3 on each side

x=8

Answer 2
8.
EXPLANATION.
because of pemdas. The equation in parenthesis must be first.
Knowing that the answer is 12.
And 1 factor is 3.
Since it is multiplication,
It is 3 x X = 12.
So x must be 4. 8 - 4 is 4.
So 8.

Related Questions

the price of a shirt was $16. there is a price increase of 4%. which of the following expression gives the new price of the shirt?

a) 16x4
b) 16x94
c) 16x104
d) 16x96

Answers

Answer:

number a is the answer 16x4

Your answer is going to be a because the shirt price is 16 and a crease by 4% so you so you multiply 16 by 4 and yeah that’s your answer

Determine the intercepts of the line.

Answers

Answer:

X intercept- (4.333,0)

Y intercept--(0,-13)

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Answers

ok thank you for letting me know

Which expression is equivalent to 3(4m - 2) - 2(m + 5)

A. 10m - 16

B. 14m + 4

C. -16m + 10

D. 12m - 6

Answers

Answer:

A. 10m - 16

Step-by-step explanation:

First, distribute 3 to all terms within the corresponding parenthesis, and -2 likewise:

3(4m - 2) =

3 * 4m = 12m

3 * -2 = -6

3(4m - 2) = 12m - 6

-2(m + 5) =

-2 * m = -2m

-2 * 5 = -10

-2(m + 5) = -2m -10

Combine like terms:

12m - 6  -2m - 10

12m - 2m - 6 - 10

(12m - 2m) + (-6 - 10)

10m - 16

A. 10m - 16 is your answer.

~

Answer:

10 m - 16 (Answer A)

Step-by-step explanation:

We use distributive property to eliminate parenthesis:

12 m - 6 - 2 m -10

and now combine like terms:

[12 m - 2 m] - 6 - 10

10 m - 16

Therefore, answer option A.  is the correct one

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Answers

Answer:

1/16

Step-by-step explanation:

The equation of a direct proportion is

y = kx

Let amount of fertilizer = y and amount of peat moss = x

We have x = 12 when y = 3/4

3/4 = k * 12

k = (3/4)/12 = 3/4 * 1/12 = 3/48 = 1/16

y = 1/16 x

The constant of proportionality is 1/16.

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Answers

Answer:

i hope i dont have to learn that sh*t

Step-by-step explanation:

common sense

Solve when m = 7 and n = 4

A.11
B.3
C.13
D.14

Answers

Answer:

D 14

Step-by-step explanation:

mn/2

=7*4/2

=28/2

=14

A supermarket has 238 large boxes of cereal. Each large box holds 32 small bags of cereal. How many small bags of cereal are in the supermarket?
(A) 6,506 (B) 6,616 (C) 7,506 (D) 7,616

Answers

Answer:

7,616

Step-by-step explanation:

You have to multiply 238 and 32.

238 x 32 = 7,616.

This trapezoid is made up of two right triangles and one rectangle.

Drag numbers to show the area of each triangle and the area of the rectangle. Then drag a number to show the total area of the trapezoid.
help plz

Answers

12345678901234567890

Answer:

each triangle: 29.75 in²

rectangle: 374 in²

total area: 433.5 in²

Step-by-step explanation:

I hope this helps!

pls help decide what i should type ..

Answers

1.) It snowed like it was the North Pole!

2.) We hit the beach and stayed all day.

3.) I had barrels of fun at the beach!

3x + 2 = -55 i need all the steps

Answers

Answer:

-19

Step-by-step explanation:

3x+2 = -55

   -2         -2

3x = -55-2

3x = -55+-2

3x = -57

/3      /3

x=-19

Answer:

-19

Step-by-step explanation:

[tex]3x + 2 = -55[/tex]

[tex]3x = -55[/tex]

       [tex]-2[/tex] (2 is negative because it was moved to the other side of the equation)

[tex]3x/3 = -57/3[/tex]   (Divide both sides of the equation by 3 to isolate x.)

[tex]x = -19[/tex]

Which shape has a greater perimeter?

Answers

Answer: Shape B, which is the thin and long rectangle.

Step-by-step explanation:

Shape A:

4 + 4 + 8 + 8

4+4 = 8

8 + 8 = 16

16 + 8 = 24

Shape A has a perimeter of 24.

Shape B:

2 + 2 + 11 + 11

2 + 2 = 4

11 + 11 = 22

22 + 4 = 26

Shape B has a perimeter of 26.

Help finding Volume

Answers

Answer:

This app you can take pictures of your problems. Try it. Hope this helps.

Step-by-step explanation:

Answer:

Ur answer would be option 4

Step-by-step explanation:

If you answer all these questions for me correctly, you'll get extra points on brainly!

Answers

we cant see the questions its blurry 2456
It’s really blurry.
Post a clear picture please .....

I need help with math please! :)

Answers

Answer:

ok but heres the graph i will put more in a sec

Step-by-step explanation:

OML MY FINGER SLIPPED--

How many unit cubes with side lengths of 1/2 unit are needed to fill the right rectangular prism?

Answers

Answer:

4

Step-by-step explanation:

The soccer league has a total of 272 players on 16 teams.

How many players per team are there in the league?

Answers

Answer:

17 i think

Step-by-step explanation:

Answer:

17 players per team.

Step-by-step explanation:

To see how much players per team there are, you divide 272 players by 16 teams.

272/16=17 players per team

Hope this helps !

Help! Please help!,!

Answers

Answer:

use the pythagoras theorem ok for 3rd side

i.e. (5.6)²+(3.9)²=c²

This morning, I heard the weather was going to be a high of 43⁰F. The actual high was 50⁰F. What is the percent error of the estimated temperature?

Answers

Answer:

50-43= 7 degrees F

Step-by-step explanation:

If F(x) = x² + 5x and G(x) = 2x + 1, find F(5) + G(6). 48 63 107

Answers

Answer:

63

Step-by-step explanation:

F(x) = x² + 5x

F(5) = (5)² + 5(5) = 25 + 25 = 50

G(x) = 2x + 1

G(6) = 2(6) + 1 = 12 + 1 = 13

F(5) + G(6) = 50 + 13 = 63

Answer:

63

Step-by-step explanation:

Thank u hope it helps..

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Answers

i don’t know what 3 and 4 is but
5. -34
6. 8
7. -9/11

Erik transformed the equation y = 2(x − 2)^2 + 5 from vertex form to standard form. His steps are shown below. Is Erik's work correct? If not, identify and correct his error.
y = 2(x − 2)^2 + 5
y = 2(x^2 − 4x + 4) + 5
y = 2x^2 − 8x + 8 + 5
y = 2x^2 − 8x + 13
A. No. The error is in the second line: the expanded form of (x − 2)^2 is x^2 − 4.
B. No. The error is in the third line: the product of 2 and x^2 − 4x + 4 is 2x^2 − 4x + 4.
C. No. The error is in the fourth line: the sum of 8 and 5 is 12.
D. Yes. Erik is correct in his transformation from vertex form to standard form.

Answers

It's A or B try using mathpapa it really helps :)
I think the answer is letter B

Use the GCF to write an equivalent expression in factored form for the expression 21a + 28y

Answers

Answer:7

Step-by-step explanation:

4/9 kilogram of baking soda costs $2. How much does 1 kilogram of baking soda cost?

please drop an explanation, and equation thanks!

Answers

Ok so we want to cross multiply.
To do this you know 4/9=2$ so now you want to know 1=x$
When you do this you get $5

Answer:

1 kg of baking soda costs $4.50.

Step-by-step explanation:

Write and solve an equation of ratios, as follows:

 4/9 kg            $2

------------- = --------------

    1 kg               x

Multiplying both numerators by 9, we get:

  4 kg          $18

------------ = ---------

   1 kg             x

Cross-multiplying, we get 4x kg = $18-kg.  Solving for x, we get:

        $18-kg

x = -------------- = $4.50

         4kg

1 kg of baking soda costs $4.50.

Muriel translated the phrase below into an algebraic expression and then evaluated it for n = 4.

the product of a number and 8

Which of the following contains the correct expression and value?

Answers

Answer:

Last answer is Right

Step-by-step explanation:

I'm sorry if Wrong it looks right tho

Answer:

It is the third expression.

Step-by-step explanation:

'8n' means 8 multiplied by n. You said product of 8 and a number. So, 8 and 4 is the number.

I hope it helped.

Using the above transformations, identify the rotation, reflection and translation. Compare and contrast each of the transformations. How would you describe these transformations to someone not familiar with geometry?

Answers

Mountain is reflection, music note is translation and fish thing is rotation. Translation is sliding it to a different position. Reflecting is like a backwards picture.
Rotation is rotating the shape on an axis

please solve


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Answers

The answer is S=99.in
Good luck is school and happy saint p day

Help ASAP!! Use IMAGE!!

Answers

A is your best shot.
Best answer is A....

What is the surface area of the solid that this net can form?
A. 106 square centimeters
B. 150 square centimeters
C. 210 square centimeters
D. 270 square centimeters

Answers

C. 210 sq cm.

13 + 12 + 5 = 30 (length)
30 • 5 = 150 sq cm (the total area of the long rectangles across)

12 • 5 = 60 sq cm
(no need to divide by 2 even if they are triangles because there are two on either side so they would cancel out)

150 + 60 = 210 sq cm.

Which equation represents a proportional relationship? I need the answer for BOTH questions.

Answers

Answer:

y =kx

Step-by-step explanation:

The equation that represents a proportional relationship or a line, is y=kx wher k is the constant of proportionality

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