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Ann [662]
3 years ago
7

Which expression is equivalent to -3.5(4x – 3)?

Mathematics
2 answers:
Arlecino [84]3 years ago
6 0

C) -14x+10.5.Hope its right

brilliants [131]3 years ago
3 0
Answer:

D. -14x + 10.5
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Use the distributive property to factor out y 5y - 3y + 12 the new expression becomes​
Brut [27]

Answer:

2y+12

Step-by-step explanation:

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3 years ago
I need the answer written as a base and exponent not decimal. please and thanks
Dmitry [639]
I think the answer would be -8^4
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Simplify (5ab4c)(-abc2).
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-5a^{2}b^{5}c^{3}
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8 0
3 years ago
A rectangular tank that is 2048 ft cubed with a square base and open top is to be constructed of sheet steel of a given thicknes
ira [324]

Answer:

The box should have base 16ft by 16ft and height 8ft Therefore,dimensions are 16 ft by 16 ft by 8 ft

Step-by-step explanation:

We were given the volume of the tank as, 2048 cubic feet.

Form minimum weight, the surface area must be minimum.

Let the height be h and the lengths be x

the volume will be: V=x²h then substitute the value of volume, we have

2048=hx²

hence

h=2048/x²

Since the amount of material used is directly proportional to the surface area, then the material needs to be minimized by minimizing the surface area.

The surface area of the box described is

A=x²+4xh

Then substitute h into the Area equation we have

A= x² + 4x(2048/x²)

A= x² + 8192/x

We want to minimize

A

dA/dx = -8192/x² + 2 x= 0 for max or min

when dA/dx=0

dA/dx= 2x-8192/x²=0

2x=8192/x²

Hence

2x³=8192

x³=4096

x=₃√(4096)

X=16ft

Then h=2048/x²

h=2048/16²

h=8ft

The box should have base 16ft by 16ft and height 8ft

Hence the dimensions are 16 ft by 16 ft by 8 ft

8 0
3 years ago
Someone help me with this question please
Naily [24]

Answer: t\geq 1

Step-by-step explanation:

you would multiply by 3 on both sides to get the division to go away.

then subtract 8 from both sides.

then you have your answer

5 0
3 years ago
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