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IRISSAK [1]
3 years ago
10

How do you solve 3 (x - 4) = 12? I'm really stuck on these type of questions

Mathematics
1 answer:
jolli1 [7]3 years ago
5 0

Answer:

Step-by-step explanation:

Here you go mate

Use PEMDAS

Parenthesis,Exponent,Multiplication,Division,Addition,Subtraction

Step 1

3(x-4)=12  Equation/Question

Step 2

3(x-4)=12  Remove parenthesis

3x-12=12

Step 3

3x-12=12  Add 12 to sides

3x=24

Step 4

3x=24  Divide sides by 3

answer

x=8

Hope this helps

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The midpoint of is M(–1, –2). One endpoint is C(–9, –4). Find the coordinates of the other endpoint D.
lions [1.4K]

x coordinate of D  =  distance of 9 - 1 = 8 from point M

y coordinate of D  =  4-2 = 2  from point M

so coordinates of D are (--1+8 , -2 + 2)  = (7 , 0)  answer

8 0
2 years ago
A brick is in the shape of a rectangular prism with a length of 8 inches, a width of 3.5 inches, and a height of 2 inches. The b
givi [52]

The mass of brick is 2478 gram

<em><u>Solution:</u></em>

A brick is in the shape of a rectangular prism with a length of 8 inches, a width of 3.5 inches, and a height of 2 inches

Length = 8 inches

Width = 3.5 inches

Height = 2 inches

<em><u>The volume of rectangular prism is given as:</u></em>

volume = length \times width \times height

volume = 8 \times 3.5 \times 2\\\\volume = 56

Thus volume of brick is 56 cubic inches

<em><u>Convert inches to centimeter</u></em>

1 inch = 2.54 centimeter

Therefore,

56 cubic inches = 56 x 2.54 x 2.54 x 2.54 cubic centimeter

56 cubic inches = 917.676 cubic centimeter

Thus, we get,

volume = 917.676 cubic centimeter

The brick has a density of  2.7 grams per cubic centimeter

Density = 2.7 grams

<em><u>The mass of brick is given by formula:</u></em>

mass = density \times volume

<em><u>Substituting the values we get,</u></em>

mass = 2.7 \times 917.676\\\\mass = 2477.724 \approx 2478

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7 0
3 years ago
The diameter of a circle is 17 cm. Find the circumference \textit{to the nearest tenth}to the nearest tenth.
aev [14]

Answer:

52.4 cm

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5 0
2 years ago
A problem states: "There are 2 more horses than cows in a field. There are 15 animals in the field in all. How many horses are t
mash [69]
Let h =  the number of horses in the field
Let c =  number of cows in the field

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4 0
3 years ago
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3 0
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