If 100 students are surveyed, about how many students own 2 or more pets? Explain. Problem: 9/20x100 Please tell me how to get the answer just not the answer. Thank you.

The population mean is 240, the population standard deviation is 40, and the sample size is 10.

It should be noted that the population mean simply means the average of the numbers that are given in a research.

Here, the population mean is 240, the population standard deviation is 40, and the sample size is 10. The sample size is the number of people that took part in the research.

Also, a normal approximation be use for this problem because it is given that the population distribution is normally distributed.

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If it's a regular nonagon, each exterior angle has measure 360°/9 = 40°, so the supplementary interior angles each have measure 180° - 40° = 140°.

We can split up the nonagon into 9 congruent isosceles triangles whose longer side coincides with the radius of the circle. (The language in the question is a bit ambiguous; I think it's clearler to say the nonagon is itself circumscribed by the circle, so that each of its vertices lie on the circle. See attached image - not mine, but it's in public domain.)

As the image suggests, each triangle will have interior angles measuring 70°, 70°, and 40°.

We can use trigonometry to find the side length of the nonagon, i.e. the length of the shortest side of each triangle - I'll call it x. For example, using the law of cosines,

x² = 4² + 4² - 2 • 4 • 4 cos(40°)   ⇒   x = 4√2 √(1 - cos(40°))

Then the perimeter of the nonagon is

9x = 36√2 √(1 - cos(40°)) in ≈ 24.623 in

The area of a triangle is 1/2 the product of its base and height. The base will be b = x, but to get the height we cut the isosceles triangle in half to produce a right triangle. We use trig again to determine its height h:

tan(70°) = h/(b/2)   ⇒   h = 1/2 x tan(70°)

so each triangle contributes an area of

a = 1/2 bh = 1/4 x² tan(70°) ≈ 5.142 in²

and so the area of the nonagon is

9a = 9x²/8 tan(70°) ≈ 46.281 in²

Answer:

$4.50B = C

Step-by-step explanation:

Kenzie bought 12 belts for $54, which means that each belt costs $4.50.

If b=number of belts, c=the total cost, and x=the cost of one belt, the equation would be:

b(x)=c,

so:

12*$4.50=$54

OR

$4.50B=C

hope that helps! good luck!

Answer:

C = 4.50B

Step-by-step explanation:

Finding the cost of a belt

Therefore, the relation between B, the number of belts, and C, the total cost, will be :

Answer:

6000 lbs is greater then 5000!

Step-by-step explanation:

Answer:

x = 16

measure of Arc(DE) = 167°

Step-by-step explanation:

Since the arc EFG make a straight angle, we can infer;

180° = Arc(EF) + Arc(FG)

180° = (x-3)° + (12x - 25)°

180° = 13x - 28

208 = 13x

16 = x

Arc GF and DE are vertical angles so if you find the measure of Arc GF then it's the same as measure of Arc DE

mDE = mGF

mDE = 12x - 25

mDE = 12(16) - 25

mDE = 192 - 25

mDE = 167°

Hope this helps!

Answer:

7.77, 7.773, 7 9/11, 157/20

Step-by-step explanation:

First, convert any fractions to decimals to make it a bit easier to order.

7.773, 157/20, 7.77, 7 9/11

Now we have:

7.773, 7.85, 7.77, 7.82

Order from least to greatest:

7.77, 7.773, 7.82, 7.85

Rewrite using the original numbers in the question:

7.77, 7.773, 7 9/11, 157/20

Hope this helps!

Answer:

1) 13

2) 9

3) 5

4) 1

Step-by-step explanation:

Hope this helps! Please let me know if you need more help or think my answer is incorrect. Brainliest would be MUCH appreciated. Also remember to rate answers to help other students, While leaving thanks to answers that help you. Have a great day!

Answer:

13, 9, 5, 1

Step-by-step explanation:

all you have to do is plug in the x to find the y

Answer:

Step-by-step explanation:

10 to the 6th power

=1,000,000

There are 210 different possible combinations

The given parameters are:

The number of possible combinations is calculated using:

Combination = nCr

This gives

Combination = 10C6

Apply the combination formula

Combination = (10!)/((10 - 6)!6!)

Evaluate

Combination = 210

Hence, there are 210 different possible combinations

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new price = original price x ( 1 + increase rate)

new price = 18.50 x (1 + 20%)

new price = 18.50 x 1.20 = 22.20

Answer: $22.20

Answer:

1300

Step-by-step explanation:

[tex]~~~~~~ \textit{Compound Interest Earned Amount} \\\\ A=P\left(1+\frac{r}{n}\right)^{nt} \quad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill &\$88000\\ r=rate\to 1.75\%\to \frac{1.75}{100}\dotfill &0.0175\\ n= \begin{array}{llll} \textit{times it compounds per year}\\ \textit{monthly, thus twelve} \end{array}\dotfill &12\\ t=years\dotfill &7 \end{cases}[/tex]

[tex]A=88000\left(1+\frac{0.0175}{12}\right)^{12\cdot 7}\implies A=88000\left( \frac{4807}{4800}\right)^{84}\implies A\approx 99459.21[/tex]

Answer:

3/4 x 2 = 6/8 6/8 ÷ 4 = 2/8

so each person would get 2/8 cups of potatoes

The number of pounds that one of the heaviest bag weighs more than one of the lightest bag in the given line plot is: 1½

In a line plot, frequency of a data point is either represented by a dot or a mark.

In the line plot given:

Heaviest bag weighs 5¾

Lightest bag weighs 4¼

The difference between the heaviest and lightest bag = 5¾  - 4¼

= 23/4 - 17/4

= (23 - 17)/4 = 6/4 = 3/2

= 1½

The heaviest bag weighs 1½ pounds than the lightest bag.

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Answer:

iii is the correct answer (the third one)

Step-by-step explanation:

additive inverse is the same as the reciprocal

It is when the denominator and numerator are swapped around

So the inverse of 3/9 is 9/3

Brainliest would be appreciated

Answer:

25.025

Step-by-step explanation:

x/38.50=65\100 cross multiply and divide by the 100 so now x=Original price=25.025

Answer:

6

Step-by-step explanation:

3/4=6/8 which means 6 1/8's can fit

Answer:

(3 1/2 ft.) / 5/8 in.

Step-by-step explanation:

both values must be in same increments; change feet to inches

3 1/2 ft = 7/2 ft

(7/2) 12/1 = 42 in.

Then:  42 / (5/8)

         42 (8/5)

         336/5

         67 1/5

you can stack 67 books

Substitute values ​​into expressions and solve??

Answer:

c=a2+b2

use the Pythagorean Theorem

X/50 = 40/64

To find x cross multiply:

64 * x = 50 * 40

Simplify:

64x = 2000

Divide both sides by 64:

X = 31.25

Answer:

x = [tex]\frac{125}{4}[/tex]

Step-by-step explanation:

[tex]\frac{X}{50}[/tex] = [tex]\frac{40}{64}[/tex]

Divide both sides of the equation by the coefficient of variable

X = [tex]\frac{40}{64}[/tex] x 50

Simplify the fractions:

x = [tex]\frac{5}{4}[/tex] x 25

Write as a single fraction

x = [tex]\frac{5*25}{4}[/tex]

Calculate the product:

x = [tex]\frac{125}{4}[/tex]

Answer:

C. take 10% of $46

Step-by-step explanation:

Hope this helps you! :)

Answer:

D.a translation 12 units right and 2 units down

Answer:

D

Step-by-step explanation:

If you take one of the point and compare it to the corresponding one on the second triangle, you can see that it is a translation of 12 right 2 down.

Answer: u = -10 + i or u = -10 - i

Step-by-step explanation:

[tex]\begin{aligned}&u^{2}+20 u+101=0 \\&u^{2}+10^{2}+2 \times 10 \times 6 u+101-1000=0 \\&(u+10)^{2}=-1\end{aligned}[/tex]

[tex]\begin{aligned}&u+10=\pm \sqrt{-1} \\&u+10=\pm i \\&u=-10 \pm i \\&\bold{u=-10+i \quad \text { or } u=-10-i}\end{aligned}[/tex]

Answer:

[tex]u = - 10 + i, \: \: - (10 + i)[/tex]

Step-by-step explanation:

[tex] {u}^{2} + 20u + 101 = 0 \\ \\ \implies \: {u}^{2} + 20u + 100 + 1 = 0 \\ \\ \implies \: {u}^{2} + 20u + {(10)}^{2} + 1 = 0 \\ \\ \implies \: {(u + 10)}^{2} = - 1 \\ \\ \implies \: {u + 10} = \pm\sqrt{ - 1} \\ \\ \implies \: {u} = \pm \: i - 10\\ \\ u = i - 10 \: \: or \: \: u = - i - 10 \\ \\ u = i - 10 \: \: or \: \: u = - (10 + i) \\ \\ u = - 10 + i, \: \: - (10 + i)[/tex]

Answer:

26 is the answers for the question

Answer:

10%

Step-by-step explanation:

(1007.174 - 857.518) / (113.181) means that

1007.174   is  1.32 standard dev ABOVE the mean

z-score = .9066    from z-score chart    

  means 90% are less and ~~ 10% are this value or more

Answer: See below

Step-by-step explanation:

Answer (1)

We must break down the expressions into factors. That is:

[tex]\begin{align} \log 12&=\log 4\times 3=\log 2^2\times 3\\ \log 12&=\log 2^2+\log 3=2\log 2+\log 3=2x+y\\ \end{align}[/tex][tex]\log \frac{14}{3}&=\log 14-\log 3 \\ =\log 2\times 7-\log 3\\ \\\log \frac{14}{3}& =\log 2+\log 7-\log 3 \\ =x+z-y\\[/tex]

Answer (2)

[tex]\log 0.3 &=\log \frac{3}{10} \\ \\ =\log 3-\log 10 \\=y-1[/tex]

Answer (3)

[tex]\log 10.5& \\ =\log \frac{21}{2} \\=\log 21-\log 2\\ \\ \log 10.5& \\ =\log 3\times 7-\log 2\\=\log 3+\log 7-\log 2\\=y+z-x[/tex]

Answer:

-439

Step-by-step explanation:

Think of the question as s(f(-7))

First replace x with -7 in the equation f(x)= 3x

s(-7) = 3*(-7)

s(-7) = -21

now it is s(-21)

we substitute -21 into the s(x) equation to get [tex]2-(-21)^2[/tex]

That gives you 2-441 = -439