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Law Incorporation [45]
1 year ago
15

K+3.9=6.7 What does k equal

Mathematics
1 answer:
natali 33 [55]1 year ago
6 0

Answer:

2.8

Step-by-step explanation:

If you turn the question around (6.7 - 3.9) the answer is 2.8

Hope this helps~

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Write an equation for each condition listed. The horizontal line that passes through (-7,4), The vertical line that passes throu
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3 years ago
Brainliest !!!!!!!!!! correct and fast answers only!!
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2 years ago
An aquarium with a square base has no top. There is a metal frame. Glass costs 8 dollars/m^2 and the frame costs 7 dollars/m. Th
Irina-Kira [14]
Given that the volume of the aquarium is 20m^3.

Volume = Area of Base x height

Area of Base = Volume / height = 20/h

Given that the aquarium has a square base.

Area of square = l^2

Thus, the length of the base of the aquarium is \sqrt{area \ of \ base} = \sqrt{ \frac{20}{h} }

The frame is to cover 8 sides with the length equal to the length of the base and 4 sides with the length of the height.

Thus, the total perimeter of the frame is given by 8\sqrt{\frac{20}{h}}+4h= \sqrt{64\left(\frac{20}{h}\right)}+4h = \sqrt{\frac{1,280}{h}}+4h

Area of the four side faces of the aquarium is 4 times the length of the base times the height = 4\times\sqrt{ \frac{20}{h} }\times h=\sqrt{16\left(\frac{20}{h}\right)h^2}=\sqrt{320h}

Total area to be covered by grass is the base and the four side faces and is given by \frac{20}{h}+\sqrt{320h}

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Cost of the entire grass = 8\left(\frac{20}{h}+\sqrt{320h}\right)=\frac{160}{h}+\sqrt{64(320h)}=\frac{160}{h}+\sqrt{20,480h

Therefore, total cost in terms of the height, h, is given by

C=\sqrt{\frac{62,720}{h}}+28h+\frac{160}{h}+\sqrt{20,480h
3 0
3 years ago
Solve for x<br> 14x = 5(2x – 4) – 12
ehidna [41]
The answer is
X = - 8
3 0
3 years ago
Read 2 more answers
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