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kondor19780726 [428]
3 years ago
7

Can someone please do this substitution method question with the working out.

Mathematics
1 answer:
timurjin [86]3 years ago
6 0

Answer:

Step-by-step explanation:

T = \frac{1}{2}m^{2}+2m - 4\\\\T = 2m + 4\\\\\frac{1}{2}m^{2}+2m - 4 = 2m + 4\\\\\frac{1}{2}m^{2}+2m - 4 - 2m - 4 = 0

Combine like terms

\frac{1}{2}m^{2}+2m - 2m - 4 - 4 = 0\\\\\frac{1}{2}m^{2} - 8 = 0\\\\\frac{1}{2}m^{2} =8\\\\m^{2} = 8*2\\\\m^{2} = 16\\\\m = \sqrt{16}

m = ± 4

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3 years ago
Clare wants to mail a package that weighs 4 1/2 ponds what could be its volume in liters
Sati [7]

Answer:

The volume in liters is 2.041165665 liter.

Step-by-step explanation:

Given : Clare wants to mail a package that weighs 4\frac{1}{2} pounds.

To find : What could be its volume in liters ?

Solution :

We know that,

Pound (lb) is a unit of Weight used in Standard system.

Liter (l) is a unit of Volume used in Metric system.

To convert 1 pound into liter is

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7 0
3 years ago
Question 5 (1 point)
Bess [88]

Answer:

x > -3

Step-by-step explanation:

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2 years ago
Read 2 more answers
A square pyramid and a cube have the same total surface area. The width of the cube is 8 centimeters. The base of the pyramid is
azamat

Answer:

Step-by-step explanation:

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Volume:-.

\\ \tt\longmapsto V=LBH

\\ \tt\longmapsto V=8(15)(4)

\\ \tt\longmapsto V=480yd^3

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2 years ago
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