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2 years ago

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The Elkwood Aquatic Society is working with various reptile species to increase their populations. The initial population of 450

endangered turtles tripled each year for the past five years. What is the independent quantity

1 answer:

kherson [118]2 years ago

8 0

Hfsursudtiditdgkduxryxux. g ug b ug ut

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Principal = $ 15000, rate = 10% p.a. and time<br> 21/5 years<br> PLS HELP ASAP

denpristay [2]

Answer:

Simple Interest: A=P(1+rt)

A=15000(1+(0.1*4.2))

A=$21,300

Compound Interest:A=P(1+r/n)^nt

A=15000(1+0.1/4.2)^1*4.2

A=$64,500

Step-by-step explanation:

4 0

2 years ago

Solve for x. −1.9=x/0.5

Feliz [49]

-1.9 = x/.5 given equation

multiply both sides by .5

.5(-1.9) = x/(.5) *(.5)

-.95 = x

check: -1.9 = -.95/ .5

4 0

2 years ago

line DE contains the points D(-1,-4) and E (3,3). Line FG contains the point F (-3,3).Which set of coordinates for point G makes

GalinKa [24]

The answer would be (-3,-7)

6 0

3 years ago

Cube root Of the mixed fraction -3 4/9

Gre4nikov [31]

To take a root of a fraction, take the root of the numerator and denominator separately

Write the number in exponential form with a base of 2 to the second power

Write the number in exponential form with a base of 3 to the third power

Reduce the index of the radical and exponent with2

Reduce the index of the radical and exponent with 2

Then it’s gonna be 2/3 2over3
-3 2/3

Reduce the numbers with greatest common divisor 3
Then the answer will be -2

8 0

3 years ago

A poll conducted in 2013 found that 55% of U.S. adult Twitter users get at least some news on Twitter (Pew, 2013). The standard

alina1380 [7]

Answer:

The 99% confidence interval for the fraction of U.S. adult Twitter users who get some news on Twitter is between 49.34% and 60.66%, which means that we are 99% sure that the true percentage of US adult Twitter users who get some news is in this interval.

Step-by-step explanation:

Confidence interval:

A confidence interval has the following format:

$M \pm zs$

In which M is the sample mean, z is related to the confidence level and s is the standard error.

55% of U.S. adult Twitter users get at least some news on Twitter (Pew, 2013). The standard error for this estimate was 2.2%.

This means that $M = 55, s = 2.2$

99% confidence level

So $\alpha = 0.01$ , z is the value of Z that has a pvalue of $1 - \frac{0.01}{2} = 0.995$ , so $Z = 2.575$ .

Lower bound of the interval:

$M - zs = 55 - 2.575*2.2 = 49.34$

Upper bound:

$M + zs = 55 + 2.575*2.2 = 60.66$

The 99% confidence interval for the fraction of U.S. adult Twitter users who get some news on Twitter is between 49.34% and 60.66%, which means that we are 99% sure that the true percentage of US adult Twitter users who get some news is in this interval.

6 0

2 years ago