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nadezda [96]
3 years ago
14

Solve using quadratic formula. 7x^2-12x+3=0

Mathematics
1 answer:
vazorg [7]3 years ago
4 0
X = (12 +- sqrt (144 -4(7)(3))/14
x = (12 + - sqrt (144 - 84))/14
x = (12 + - sqrt(60))/14
x = (12 + - 2sqrt 15))/14
x = (6 + - sqrt 15) / 7 
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Which math expression means "the difference of 40 and 12"?
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Answer:C

Step-by-step explanation:This is because c has subtract sign and you are trying to find the difference and difference you need to subtract.And you need to find the difference of 40 and 12 so u write 40- 12 which is choice c.

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6 0
3 years ago
If the very first chip had four transistors, use Moore’s law to calculate the number of transistors on a chip every two years ov
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3 years ago
00:00
lara [203]

Answer:

It will take 39.27 gallons to repaint the barn.

Step-by-step explanation:

The image of the setup is obtained from online and attached to this solution.

The rectangular prism is a cuboid of

Length = 84 ft

Breadth = 38 ft

Height = 20 ft

And the triangular prism on top of the rectangular prism has a vertical height of 12 ft.

The surface area of the composite structure that is available for painting include the 4 sides of the top triangular prism and the four sides of rectangular prism

Two of the faces of the triangular prism are triangles with base of 38 ft and height of 12 ft.

The other two faces of the triangular prism are rectangles with length 84 ft and breadth of the hypoteneuse of the right angled triangle on top.

B² = 12² + 19²

B = 22.47 ft

Total Surface area of the faces of the rectangular prism is then

2×(84×20) + 2×(38×20) = 4880 ft²

Total surface area of the faces of the triangular prism is then

2×(0.5×12×38) + 2×(84×22.47) = 4,230.96 ft²

Total surface area = 4880 + 4230.96 = 9110.96 ft²

1 gallon of paint = 232 ft²

x gallons of paint = 9110.96 ft²

x = (1×9110.96/232) = 39.27 gallons.

Hope this Helps!!!

5 0
3 years ago
Simplify 5(x – 2) + 11
Licemer1 [7]

Answer:

5x + 1

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
1/2×1/3×1/4 need to show work
klasskru [66]
1x1x1=1
2x3x4=6x4=24
1/24
please mark me brainliest I'm trying to level up

3 0
3 years ago
Read 2 more answers
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