2 years ago

-5(4-n)=1+2n Anyone know this

Mathematics

1 answer:

Sever21 [200]2 years ago

3 0

Answer:

n= -10

Step-by-step explanation:

-20+n=1+2n which simplifies to -21n+n=2n which simplifies to -20n=2n which simplifies to

n= -10

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Use addition to solve the linear system of equations. Include all of your work in your final answer.

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Michelle brought an apple cut in 4 for $0.10 per piece. How much should she pay for 3 dozen pieces

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Answer:

$0.90

Step-by-step explanation:

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Read 2 more answers

Is 3/8 equal to 4/10?

BaLLatris [955]

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3/8 is < / = 4/10

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2 years ago

The area of the surface of a sphere is described by the formula S=4(3.14)r^2. The earth has a radius of 3960 miles and dry land

Stella [2.4K]

Answer: $57,512,581.63miles^2$

Step-by-step explanation:

Substitute the value of the radius of the Earth into the formula given in the problem, where r is the radius, to obtain the surface area of the Earth:

$S=4(3.14)r^2\\S=4(3.14)(3,960miles)^2\\S=196,960,896miles^2$

The problem says that the dry land forms 29.2% of the Earth’s surface, therefore, multiply the surface area by $\frac{29.2}{100}=0.292$

Threfore, the area of dry land is the following:

$S_{land}=(0.292)(196,960,896miles^2)=57,512,581.63miles^2$

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2 years ago