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Bas_tet [7]
3 years ago
7

Simplify 12(x-4)+4(x+7)

Mathematics
2 answers:
My name is Ann [436]3 years ago
5 0

Expand

12x - 48 + 4x + 28

Collect like terms

(12x + 4x) + (-48 + 28)

Simplify

<u>16x - 20</u>

Elenna [48]3 years ago
5 0

Answer:

16x - 20

Step-by-step explanation:

12(x-4)+4(x+7)

Applying the distributive law to both parentheses:-

= 12x - 48 + 4x + 28

= 16x - 20  

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The answer please ok
Sphinxa [80]
I think the answer to that question is b
6 0
3 years ago
A rectangular garden has a walkway surrounding it that is 4 feet wide (a uniform width
Oksana_A [137]

Answer: 300 square feet  

Step-by-step explanation:

length of walkway = 20 + 2x

width of walkway = 15 + 2x

A(x) = (20 + 2x)(15 + 2x)

A(x) = 300 + 30x + 40x + 4x2

A(x) = 300 + 70x + 4x2

7 0
2 years ago
A metal hollow bar whose cross section and dimension are shown below weighs 8x10^3 kg/m^3 and measure 2m in length ..determine t
devlian [24]
1) We calculate the volume of a metal bar (without the hole).

volume=area of hexagon x length
area of hexagon=(3√3 Side²)/2=(3√3(60 cm)²) / 2=9353.07 cm²
9353.07 cm²=9353.07 cm²(1 m² / 10000 cm²)=0.935 m²

Volume=(0.935 m²)(2 m)=1.871 m³

2) we calculate the volume of the parallelepiped

Volume of a parallelepiped= area of the section  x length
area of the section=side²=(40 cm)²=1600 cm²
1600 cm²=(1600 cm²)(1 m² / 10000 cm²=0.16 m²
Volume of a parallelepiped=(0.16 m²)(2 m)=0.32 m³

3) we calculate the volume of a metal hollow bar:
volume of a metal hollow bar=volume of a metal bar -  volume of a parallelepiped

Volume of a metal hollow bar=1.871 m³ - 0.32 m³=1.551 m³

4) we calculate the mass of the metal bar

density=mass/ volume  ⇒ mass=density *volume

Data:
density=8.10³ kg/m³
volume=1.551 m³

mass=(8x10³ Kg/m³ )12. * (1.551 m³)=12.408x10³ Kg

answer: The mas of the metal bar is 12.408x10³ kg  or   12408 kg  


4 0
2 years ago
3. The photo below is being enlarged to form
Umnica [9.8K]

Answer:

Not enough information

Step-by-step explanation:

Add the photo next time

4 0
2 years ago
Label the place value 7,854.209
yuradex [85]
7(thousands)
8(hundreds)
5(tens)
4(ones)
.(decimal point)
2(tenths)
0(hundredths)
9(thousandths)
Hope this helps! I would appreciate it if I got brainliest! Thanks! =D
6 0
3 years ago
Read 2 more answers
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