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2 years ago

Find the area of the shape below. PLEASE HELP!

Mathematics

1 answer:

kotykmax [81]2 years ago

4 0

Answer:

A=15 units^2

Step-by-step explanation:

A = 1/2(base one + base two)h

A=1/2(3+7)3

A=1/2(10)3

A=5*3

A=15 units^2

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3 years ago

a laboratory, you determine that the density of a certain solid is 5.23×10−6kg/mm3. Convert this density into kilograms per cubi

Vedmedyk [2.9K]

Answer:

$5.23\times 10^{-6}\ kg/mm^3=5230\ kg/m^3$

Step-by-step explanation:

Given : The density of a certain solid is $5.23\times 10^{-6}$ kg/mm³.

To find : Convert this density into kilograms per cubic meter ?

Solution :

We know that,

$1\ m^3=10^9\ mm^3$

or $10^9\ mm^3=1\ m^3$

So, $1 mm^3=\frac{1}{10^9}\ m^3$

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Converting $5.23\times 10^{-6}$ kg/mm³ into kg/m³,

$5.23\times 10^{-6}\ kg/mm^3=\frac{5.23\times 10^{-6}}{10^{-9}}\ kg/m^3$

$5.23\times 10^{-6}\ kg/mm^3=5.23\times 10^{-6+9}\ kg/m^3$

$5.23\times 10^{-6}\ kg/mm^3=5.23\times 10^{3}\ kg/m^3$

$5.23\times 10^{-6}\ kg/mm^3=5230\ kg/m^3$

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3 years ago

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and flows out at a rate of

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so that the amount of salt in the tank at time t changes according to

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A(t) = 200 + Ce^(-t/40)

Given that A(0) = 50, we find

50 = 200 + C ==> C = -150

so that the amount of salt in the tank at time t is

A(t) = 200 - 150 e^(-t/40)

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