A biologist studied the frequency of croaks for frogs from two different regions. From a random sample of 32 frogs located in the northern region, the mean number of croaks per hour was 21.3, and from a random sample of 38 frogs located in the southern region, the mean number of croaks per hour was 28.9. To estimate the difference in the mean number of croaks (southern minus northern), a 95 percent confidence interval was constructed from the samples. The interval was reported as (7.1,8.1).

Answer: 15<x<43

Step-by-step explanation:

Answer:

A solid made up of polygonal regions is called polyhedron.

I hope it will help you...

[tex]darkprincess[/tex]

Answer:

I'm not for sure but I think it's a

Answer:

50

Step-by-step explanation:

The formula for slope is (y2 -y1) / (x2 - x1).

Insert two coordinates into the formula (1, 50) and (2, 100) to get 50.

Answer:

That would be 2/7.

Step-by-step explanation:

By finding the GCD between 14 and 49, you can reduce the fraction.

The GCD between 14 and 49 is 7.

By dividing both 14 and 49 by 7, you'll reduce your answer.

14/49 ---> 2/7

Answer:

17 160 inches

Step-by-step explanation:

Area = width x length

so 165 x 104 which is 17 160

Therefore, the area of the rectangle is 17 160 inches

hope this helps, give brainliest?

Answer:total amount of money that he should pay if he has not used his duty free exemption is $98

Step-by-step explanation:I did this before

Answer:

[tex]\frac{63}{65}[/tex]

Step-by-step explanation:

The angle theta terminates in quadrant 4, so we know [tex]\frac{3\pi}{2} < \theta < 2\pi[/tex] and that the sin is negative and the cos is positive.

Using the Pythagorean identity [tex]\sin^2\theta+\cos^2\theta=1[/tex], we substitute [tex]\sin\theta[/tex] to find [tex]\cos\theta[/tex] :

[tex](-\frac{16}{65})^2+\cos^2\theta=1[/tex].

Solving for [tex]\cos\theta[/tex], we have

[tex]\cos^2\theta=1-\frac{256}{4225}\\[/tex],

[tex]\cos^2\theta=\frac{3969}{4225}[/tex].

Taking the square root of both sides gives

[tex]\cos\theta=\pm\frac{63}{65}[/tex].

We found before that since the angle theta terminates in quadrant 4, the cos is positive, so we take the positive square root to get

[tex]\cos\theta=\frac{63}{65}[/tex].

find the volume of the cubes or rectangular prisms in cubic centimeters

= 8/125cm³

=36/125cm³

=6/125cm³

= 1/125cm³

⤑ To find the volume of a cube with side length of 2/5cm,

we'll use this formula

[tex]\huge⇒ {a}^{3} [/tex]

[tex] \huge ⇒ ({ \frac{2}{5} })^{3} \small{cm}^{3} [/tex]

[tex]\huge⇒ \frac{8}{125} \small {cm}^{3} \\ [/tex]

Hence, the volume of the given cube is 8/125 cm³

⤑To find the volume of a rectangular prism with a length ,width and height of 3/5 cm 4/5 cm and 3/5 cm respectively,

we'll use this formula

[tex]\huge⇒lwh[/tex]

[tex]\huge⇒( \frac{3}{5} \times \frac{4}{5} \times \frac{3}{5}) \small {cm}^{3} [/tex]

[tex]\huge⇒ \frac{36}{125} \small {cm}^{3} [/tex]

hence ,the volume of the given rectangular prism is 36/125 cm³

⤑To find the volume of a rectangular prism with a lenght, width and height of 1/5 cm, 2/5 cm, and 3/5 cm respectively,

we'll use this formula

[tex]\huge⇒lwh[/tex]

[tex]\huge⇒( \frac{1}{5} \times \frac{2}{5} \times \frac{3}{5}) \small {cm}^{3} [/tex]

[tex]\huge⇒ \frac{6}{125}\small {cm}^{3} [/tex]

hence, the volume of the given rectangular prism is 6/125 cm³

⤑To find the volume of a cube with a side length of 1/5cm

we'll use this formula

[tex]\huge⇒ {a}^{3} [/tex]

[tex]\huge⇒ {( \frac{1}{5} )}^{3} \small {cm}^{3} [/tex]

[tex]\huge⇒ \frac{1}{125} \small {cm}^{3} [/tex]

hence,the volume of the given cube is 1/125 cm³

Answer: 9/4 (or 2 and 1/4) quarts of red paint, & 2 quarts of blue paint.

Step-by-step explanation:

We know the amount of blue paint (2/3) is proportional to the amount of red paint (3/4).

Let's first add 2/3 and 3/4, that will make 17/12 quarts of purple paint. Call this a "serving".

The next step is to find out how many "servings" you need to make to make 4 and 1/4 quarts of purple paint.

4 and 1/4 = 17/4

17/4 divided by 17/12 = 3

Now we know the number of servings to make, which is 3.

Since 3/4 quarts of red paint is enough for one serving, we need to multiply this by 3. We can apply the same logic to the blue paint.

3/4 * 3 = 9/4

2/3 * 3 = 2

There's your answers.

Answer:

divided 75 and 50 then divided 85 and that number

Step-by-step explanation:

Answer:

$195.30

Step-by-step explanation:

Answer:

18

Step-by-step explanation:

Is this an IQ test?

My IQ is 145...

Answer:

18!

Step-by-step explanation:

the ! means factorial

that takes a # and all the # less and multiplies them

18 x 17 x 16 x 15 x 14...

This gives you the amount of ways to order the students

Answer:

jason

Step-by-step explanation:

jade's method is not the distributive property.

The sum of the geometric series when the value of n is from 2 to 10 is 0.964. Then the correct option is C.

A series is a sum of sequence terms. That is, it is a list of numbers with adding operations between them.

The expression is 25(0.3)ⁿ⁺¹ and n varies from 2 to 10.

We know that the sum of the geometric series can be given as

[tex]S_n = a* \dfrac{1-r^n}{1-r}[/tex]

Where the common ratio (r) is 0.3 and a is the first term is 1.

[tex]\rm S_n = 1* \dfrac{1-0.3^9}{1-0.3}\\\\S_n = 1* \dfrac{0.9999}{0.7}\\\\S_n = 1.43[/tex]

Then we have

summation = 25(0.3)³ × 1.43

summation = 0.96423

More about the series link is given below.

https://brainly.com/question/10813422

Answer:

18 servings

Step-by-step explanation:

6*3=18

Answer:

(2,0)

Step-by-step explanation:

Translation is a type of transformation that a graph can go through. A translation moves a point up, down, left, and/or right.

First, you need to understand how translations affect a coordinate point. Moving 1 unit left is a horizontal translation. This means that it will change the x-value of a coordinate point (reminder: the x-value is the first value in a coordinate pair).

Then, remember the difference between moving left and right. Moving right will increase the x-value, and moving left will decrease the x-value.

Finally, rewrite the coordinate pair using the information above. Since you are moving the point 1 unit to the left, you must subtract 1 from the x-value. This creates the new coordinate pair, (2,0).

Answer:

b > 20

Step-by-step explanation:

1. isolate the b

3/4 • b > 15

Multiply both sides by inverse fraction 4/3:

3/4b • 4/3 > 15 • 4/3

Group like terms:

3/4 • 4/3 • b > 15 • 4/3

Simply the fraction:

b> 15 • 4/3

Multiply the fraction:

b> 15 • 4 / 3

Simplify the arithmetic:

b > 20

Answer:

0.06% annually

Step-by-step explanation:

Divide $720 by 3. We get $240, so we know this is the amount of interest we get per year. Dividing $240 by $4,000 gives us

[tex]\frac{240}{4000} = 0.06[/tex]

Answer:

11/15

Step-by-step explanation:

Answer:

11/15

Step-by-step explanation:

Find the LCD of 1/3 and 2/5 and rewrite to solve with the equivalent fractions.

LCD = 15

[tex]\frac{5}{15}+\frac{6}{15}=\frac{11}{15}[/tex]

[RevyBreeze]

From the four different credit cards, the order should frank plan on paying off his credit cards is D, A, C, B.

The debt payment plan, is the understanding between the creditor and the borrower to clear all the debt money.

Frank has four different credit cards, the balances, and interest information of which are outlined in the table below.

As frank was developing a debt payment plan, Rick suggested that he pay off the credit cards beginning with the highest interest rate, working his way down.

Frank chooses to follow Rick's advice. By this way, he will choose the highest interset rate to lowest as,

[tex]21\%-19\%-71.50\%-15\%[/tex]

Thus, from the four different credit cards, the order should frank plan on paying off his credit cards is D, A, C, B.

Learn more about the debt payment plan here;

https://brainly.com/question/25035804

Answer: A

Step-by-step explanation:

Answer:

penny would be 67.53

Step-by-step explanation:

and the dollar would be 68

Answer:

4.4 x 10^4

Step-by-step explanation:

(1.892 x 10^8)/(4.3 x 10^3) can be written as:

(1.892/4.3)*(10^8/10^3)

Do each calculation separately:

---------

(1.892/4.3) = 0.44

----------

(10^8/10^3) = 10^5  [The coefficient 3 in the denominator is subtracted from the coefficient in the numerator]

Now put the two together: 0.44 x 10^5

Move the decimal point so that it is to the right of the first digit:  4.4 and then decrease the 10^5 to 10^4.

Answer:  4.4 x 10^4

Answer:

Yes, because the leg adjacent to one of the acute angles is opposite the other acute angle.

Step-by-step explanation:
Just did it

Solution :

Let,

We know that,

[tex]{ \longrightarrow \bf \qquad \: (AB) {}^{2} +( BC) {}^{2} = (AC) {}^{2} }[/tex]

[tex]{ \longrightarrow \sf \qquad \: (22) {}^{2} +( BC) {}^{2} = (25) {}^{2} } [/tex]

[tex]{ \longrightarrow \sf \qquad \: (BC) {}^{2} = (25) {}^{2} - ( 22) {}^{2} }[/tex]

[tex]{ \longrightarrow \sf \qquad \: BC = \sqrt{(25) {}^{2} - ( 22) {}^{2}} }[/tex]

[tex]{ \longrightarrow \sf \qquad \: BC = \sqrt{625 - 484} }[/tex]

[tex]{ \longrightarrow \sf \qquad \: BC = \sqrt{141} }[/tex]

[tex]{ \longrightarrow \bf \qquad \: BC \approx11.87 }[/tex]

Therefore,

Step-by-step explanation:

According to Pythagoras theorem ,

Hypotenuse² = Perpendicular ² + Base ²

Here , we have to find perpendicular

So,

Hypotenuse² - Base² = Perpendicular²

putting the known values

25² - 22² = perpendicular²

141 = perpendicular²

√141 = perpendicular

Perpendicular = 11.9 unit

Answer:

b

Step-by-step explanation:

i could be wrong