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Black_prince [1.1K]
2 years ago
6

Mrs. Byrne washed

Mathematics
1 answer:
AleksAgata [21]2 years ago
5 0

Answer:

Mrs. Byrne washed more

Step-by-step explanation:

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Oil is pumped continuously from a well at a rate proportional to the amount of oil left in the well. Initially there were 3 mill
abruzzese [7]

Answer:

V' = -0.11552 *V\\= -0.11552(1.8)\\ \\=-0.20794 million per year

Step-by-step explanation:

Given that oil is pumped continuously from a well at a rate proportional to the amount of oil left in the well. Initially there were 3 million barrels of oil in the well; six years later 1,500,000 barrels remain.

i.e. if V stands for volume of oil, then

V' =kV\\dv/V= kdt\\ln V = kt+C\\V = Ae^{kt}

To find A and k

V(0) = A = 3 million

Hence V = 3e^{kt}

V(6) = 1.5

i.e. 1.5 = 3e^{6k}\\ln 1.5 =ln 3 +6k\\k = -0.11552

V(t) = 3e^{-0.11552t}

a) Using the above value of k , we have

V' = -0.11552 *V\\= -0.11552(1.8)\\ \\=-0.20794 million per year.

4 0
3 years ago
How many miles equal 26 kilometers? [1 kilometer = 0.62 mile]
Sati [7]
1 km = 0.62 miles....so 26 km = (26 * 0.62) = 16.12 miles
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3 years ago
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Can anyone help solve these equations using the elimination method
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Step-by-step explanation:

dear by changing the sign by elimination method everything gets cancelled

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Daphne borrows $2500 from a financial institution that charges 6% annual interest, compounded monthly, for 2 years. The amount t
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7 0
2 years ago
The sun is about 93 x 10^6 miles from earth. what is this distance written as a whole number? 
agasfer [191]

For this case we have the number in exponential notation:

93 * 10 ^ 6

We observe that the exponent of the exponential notation is positive.

Therefore, to express the number as a whole number, we must move the comma 6 spaces to the right.

We have then:

93 * 10 ^ 6 = 93,000,000

Answer:

this distance written as a whole number is:

93 * 10 ^ 6 = 93,000,000 miles

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3 years ago
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