Tail-feather length in birds is sometimes a sexually dimorphic trait. That is, the trait differs substantially for males and for females. Researchers studied the relationship between weight (x) and tail-feather length (y) in a sample of five wild male longtailed finches. Here are the data:

Weight Tail Length
20.5 82.5
19.1 82.5
15.9 67
16.7 70.5
15.7 73.5

The value of the linear correlation coefficient between weight and tail feather length is approximately : _________

Answer:

7

Step-by-step explanation:

hello :

|-7| = - (-7) = 7

Answer:

the absolute value of l-7l is 7

hope it helps.

Answer:

20 miles) / (4 hours) = (20/4) (miles/hours)  =  5 miles per hour

(4 hours) / (20 miles) = (4/20) (hours/miles)  =  0.2 hours per mile =

                                                                            12 minutes per mile

Answer:

22-24= -2

31-33= -2

Step-by-step explanation:

The probability that you win first prize and your friend wins second prize is given as follows:

B. 9/990.

A probability is calculated as the division of the desired number of outcomes by the total number of outcomes in the context of a problem/experiment.

The total number of outcomes is given as follows:

990.

The number of desired outcomes is of 9, as:

Hence:

1 x 1 x 9 = 9.

Meaning that the probability is of:

p = 9/990.

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9514 1404 393

Answer:

  7)  42 yd²

  8)  32 in²

Step-by-step explanation:

Put the given numbers in the appropriate area formula and do the arithmetic.

__

7) The area of a triangle is given by the formula ...

  A = 1/2bh . . . . . where b is the base length and h is the height

  A = 1/2(12 yd)(7 yd)

  A = 42 yd²

__

8) The area of a parallelogram is given by the formula ...

  A = bh

  A = (8 in)(4 in)

  A = 32 in²

Answer:

4x + 10

Step-by-step explanation:

Given

Let

[tex]t = time[/tex]

[tex]s = speed[/tex]

So:

[tex]t = 2; s = (2x +5)[/tex] --- first 2 hours

[tex]t = 3; s = (3x -5)[/tex] --- last 3 hours

Required

Distance covered in the first 2 hours

Distance (d) is calculated as:

[tex]Distance = speed * time[/tex]

i.e.

[tex]d = s * t[/tex]

For the first 2 hours, we have:

[tex]t = 2; s = (2x +5)[/tex]

So:

[tex]d = (2x + 5) * 2[/tex]

Open bracket

[tex]d =2x * 2 + 5 * 2[/tex]

[tex]d =4x + 10[/tex]

Hence, the distance covered in 4x + 10

Answer:

3.4

Decrease ; 3.375

Step-by-step explanation:

Mean = Σfx / Σf

Σfx = (1 * 2) + (2 * 2) + (3 * 3) + (4 * 9) = 51

Σf = 1 + 2 + 3 + 9 = 15

Mean = 51 / 15 = 3.4

If 1 more dot is added to the 3rd column:

Σfx = (1 * 2) + (2 * 2) + (3 * 4) + (4 * 9) = 54

Σf = 1 + 2 + 4 + 9 = 16

Mean = 54 / 16 = 3.375

Answer:

904.32 cm²

Step-by-step explanation:

V = πr²h

V = 3.14 × (6 cm)² × 8 cm

V = 904.32 cm²

Answer:

Step-by-step explanation:

125

Answer:

[tex]x=42[/tex]

Step-by-step explanation:

[tex]suppose, a=?[/tex]

[tex]a+126+16=180[/tex]

[tex]a+142=180[/tex]

[tex]a=180-142[/tex]

[tex]a=38[/tex]

[tex]NOW,[/tex]

[tex]a+16+3x=180[/tex]

[tex]38+163x=180[/tex]

[tex]54+3x=180[/tex]

[tex]3x=180-54[/tex]

[tex]3x=126[/tex]

[tex]x=126/3[/tex]

[tex]x=42[/tex]

----------------------------

hope it helps..

have a great day

Answer:

131.95

Step-by-step explanation:

[tex]v = \frac{1}{3} \times \pi \times {r}^{2} \times h[/tex]

[tex]v = \frac{1}{3} \times 3.142 \times {3}^{2} \times 14 \\ v = \frac{1}{3} \times 3.142 \times 9 \times 14 \\ v = 131.964 {cm}^{3} [/tex]

Answer:

convenience sampling

Step-by-step explanation:

Step-by-step explanation:

Morgan    12 ras     12× 3   black          Total     12×4 or 12 + 3 × 12 =  48 berries

Kendra   picked 9 × Morgan's Total

    Kendra picked   (12 +(3 × 12)) × 9       =   48 × 9     = 432 berries

Step-by-step explanation:

Answer attached :)

Hope it helps :D

Answer:

1.75 * 0.84

Step-by-step explanation:

1.74 * 0.84 = 1.4616

1.79 * 0.69 = 1.2351

Answer:

1.74 x 0.84 is greater

Step-by-step explanation:

1.74 x 0.84 = 1.4616

while

1.79 x 0.69 = 1.23509

Answer: 19.06

Step-by-step explanation:

Answer:

$162.05

Step-by-step explanation:

Calculation to determine How much do they spend weekly for food

Using this formula

Amount spent weekly=(Annual Disposable income*Disposable income percentage)/Numbers of weeks in a year

Let plug in the formula

Amount spent weekly=($44,350*19%)/52 weeks

Amount spent weekly=$8,426.5/52 weeks

Amount spent weekly=$162.048

Amount spent weekly=$162.05 (Approximately)

Therefore the amount they spent weekly for food is $162.05

Answer:

8 is the answer of this question

so the total area is 113.04 and divide that in the total sections is 113.04 by 12 = C 9.42 in

Answer:

The correct answer is 100

Answer:

0.94444444444

Answer:

t = 1180 years

Step-by-step explanation:

We will solve this using the radioactive decay formula which is;

A = A_o × 2^(-t/h)

Where;

A = Amount of liquid remaining after time (t)

A_o = initial amount of liquid at initial time

t = time of decay

h = half-life of the liquid

We have;

A_o = 1(we assume it is 100% which is 1)

A = 0.02% = 0.0002

h = 96 years

Thus;

0.0002 = 1 × 2^(-t/96)

0.0002 = 2^(-t/96)

(-t/96)log 2 = log 0.0002

(-t/96) = (log 0.0002)/log 2

(-t/96) = -12.2877

t = 96 × 12.2877 (negative has canceled out)

t = 1179.6192

To the nearest year gives;

t = 1180 years

Answer:

We need to find the first term.  We can use the formula

an = a1 + d(n - 1)

to solve for a1.  We already know the 12th term, a12, common difference, d, and nth sequence, n.

a12 = -36

d = -4

n = 12

-36 = a1 - 4(12 - 1)

-36 = a1 - 44

8 = a1

The first term is 8.  Therefore, your formula is

an = 8 - 4(n - 1)

an = -4n + 12

Then use this formula to graph.

n is the independent variable.

an is the dependent variable.

Your graph will be a line.

n    |       an

___________

1          8

2          4

3          0

4         -4

5         -8

6         -12

Step-by-step explanation:

give me brainliest.

Answer:

-3

Step-by-step explanation:

To do this, let's arrange it into an equation:

(19+12+14+18+x) / 5 = 12

Let's shift the 5 to the other side by multiplying 12 by 5, which is 60. Now the equation looks like this:

19+12+14+18 + x = 60

Now let's add 19, 12, 14 and 18 together, which is 63:

63 + x =60

Let's move the 63 over to the other side by subtracting it from 60, so 60-63 equals -3. Hence, the answer is -3. Hope this helps!

Answer:

9/8

Step-by-step explanation:

.........................

Answer:

5 is greater than y-8 since 5 is positive it + in the begging +5 while - 8 is less than 0 because it has - in the begging

Answer: 15 and 20

Step-by-step explanation:

just did this

Answer:

i need points rq thanks so much

Step-by-step explanation:

imma go waste these points now

She'll have $246 more purchasing power.

Current salary per year = $41000

Next year salary = $41000 × (2.5% × $41000)

= $41000 + (0.025 × $41000)

= $41000 + $1025

= $42025

Effect of Inflation will be:

= $41000 + (1.9% × $41000)

= $41000 + (0.019 × $41000)

= $41000 + $779

= $41779

Therefore, the difference will be:

= $42025 - $41779

= $246

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