3 years ago

Solve the equation, justify each step with an algebraic property -3x=15

Mathematics

1 answer:

Hunter-Best [27]3 years ago

8 0

Divide each side by -3..

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U.S. Postal Service regulations state that a package can be mailed using Parcel Post rates if it weighs no more than 80 pounds.

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5 because 80/14 is 5.714

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3 years ago

The population of rabbits on an island is growing exponentially. In the year 1990, the population of rabbits was 1200, and by 19

kobusy [5.1K]

Answer:

2023 rabbits

Step-by-step explanation:

The exponential model consists of the following expression:

$y = A \cdot r^{t}$

Where:

$A$ - Initial population.

$r$ - Increase rate.

$t$ - Time

$y$ - Current population.

The initial population and increase rate are, respectively:

$1200 = A \cdot r^{0}$

$A = 1200$

$1700 = 1200 \cdot r^{4}$

$r^{4} = \frac{1700}{1200}$

$r^{4} = \frac{17}{12}$

$r = \sqrt[4]{\frac{17}{12} }$

$r \approx 1.091$

The exponential model that predicts the population of rabbits is:

$y = 1200\cdot 1.091^{t}$

Lastly, the expected population for the year 1996 is:

$y = 1200\cdot 1.091^{6}$

$y\approx 2023.624\,rabbits$

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3 years ago

1.) (X+9)(x+3)

hodyreva [135]

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How do you know if something is congruent? (scale Factors)

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example: Two polygons are congruent if they are the same size and shape - that is, if their corresponding angles and sides are equal.

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They basically make a profit of $2.85. Because $9.95 - $7.10 = $2.85.

To break even you would have to sell 4000 footballs. Because 11,400 / 2.85 = 4000.

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