Angela wants to know how many families in her neighborhood plan to attend the parade. She puts all 120 of the neighborhood addresses in a hat and draws a random sample of 30 addresses. She then asks those families if they plan to attend the parade. She finds that 40% of the families plan to attend the parade. She claims that 40% of the neighborhood families would be expected to attend the parade. Is this a valid inference? (5 points)

A) Yes, this is a valid inference because the 30 families speak for the whole neighborhood

B) Yes, this is a valid inference because she took a random sample of the neighborhood

C) No, this is not a valid inference because she did not take a random sample of the neighborhood

D) No, this is not a valid inference because she asked only 30 families

Answer:

1 = natural numbers

2 = 1

3 = 0

4 = -7/5

5 = NO

6 = 1 and -1

7 = 1/5

8 = x

Answer: 1 1/5

Step-by-step explanation: So the diameter is the length of the whole sphere and since half of this is 3/5 you at times that by two and you would get 1 1/5

Answer:

30cm

Step-by-step explanation:

Diameter of circle= 2×radius

2×⅗

30cm

hope it helps

Answer:

1/3*9.7*pi7.6^2ft^3

Step-by-step explanation:

Then round to the nearest hundred,

=586.7ft^3

Answer:

Log (1/x) = –0.9925

Step-by-step explanation:

From the question given above, the following data were obtained:

Log x = 0.9925

Log (1/x) =?

Recall,

Log (M/N) = log M – Log N

Thus,

Log (1/x) = Log 1 – Log x

Recall

Log 1 = 0

Log x = 0.9925

Thus,

Log (1/x) = Log 1 – Log x

Log (1/x) = 0 – 0.9925

Log (1/x) = –0.9925

Answer:

ɨ ċaռ't ɛxքʟaɨռ ɮʊt ɨt ɨs aċ=59x2

Answer: 363

Step-by-step explanation:

First you’d do 11 X 11=121 divide by 2 and get 60.5 X 4 (Because there are for triangle sides) and get 242 plus the rectangular base 11X11=121+242=363

Answer:

[tex]2,8,6,18[/tex]

Step-by-step explanation:

Coordinates are written in [tex](x,y)[/tex] form. In a function, this translates to (input, output). Therefore, in these four coordinates, the four outputs are 2, 8, 6, and 18.

Answer: 12

Step-by-step explanation:

Answer:

(4,9)

Step-by-step explanation:

To solve this, you can use substitution or elimination. In this case I would use substitution. To do this, you have to isolate a variable. x is already isolated so we can skip this step. plug x into 5x-7y=-43. This will make the equation 5(2y-14)-7y=-43. Simplify this to get 10y-70-7y=-43. Simplify this to get 3y-70=-43. Add 70 in both sides to isolate y. This will make the equation 3y=27. Divide both sides by 3 to make y equal to 1. This will make the equation y=9. Now you know that y=9. Plug 9 into any equation. x=2(9)-14. Simplify this to get x=18-14. x=4. Now put the numbers as an ordered pair which is (x,y). We know that x=4 and y=9 so it is (4,9).

If this answer has helped you please mark as brainliest.

Answer:

Where are you from ??

Step-by-step explanation:

From New Zealand ??

Answer:

D. (-5, -4)

Step-by-step explanation:

When making a rotation 90° clockwise, the coordinates will swap places. However, the x value will be the opposite and the y value will stay the same.

90° clockwise rule:

(x, y) ---> (y, -x)

(4, -5) ---> (-5, -4)

Hope this helps!!

Answer:

Either A or D

Step-by-step explanation:

I got It right Hope it helps this you guys

Answer:

∠ABC= 35°

Step-by-step explanation:

im not sure if u need explanation but comment if u do

Answer:

 6z ^ 4-4 is a factor

Step-by-step explanation:

Given data

6z ^ 4 - 4 + 9(y ^ 3 + 3)

open bracket

6z ^ 4 - 4 + 9y ^ 3 + 27

collect like terms

6z ^ 4+9y^3 - 4 +27

6z ^ 4+9y^3 - 23

From the above expression  6z ^ 4-4

Answer:

its a.

(y^3+3)

Step-by-step explanation:

common sense

Answer:

s=30

Step-by-step explanation:

15s-100=350 =>15s=350+100 =>15s=450 => s=450/15 = 30 => s=30

Have a nice day !

Answer:

[tex]S_{DA}=-11[/tex]

Step-by-step explanation:

From the question we are told that:

The Vertices points for DAN

[tex]D= (2.5,3)[/tex]

[tex]A=(3.2,- 4.7)[/tex]

[tex]N=(-6.9.3)[/tex]

Generally the equation for slope of DA [tex]S_{DA}[/tex] is mathematically given by

 [tex]S_{DA}=\frac{y_2-y_1}{x_2-x_1}[/tex]

 [tex]S_{DA}=\frac{-4.7-3}{3.2-2.5}[/tex]

 [tex]S_{DA}=-11[/tex]

Answer:

[tex]2x + 12 = \frac{180}{2} = 90 \\ 2x = 78 \\ x = 39[/tex]

Fill in the given information then calculate the missing parts. See attached picture

Answer:

105°

Step-by-step explanation:

11x-5 + 6x+5 + x = 180

18x = 180

x = 10

m∠Q = 11(10)-5 = 110-5 = 105°

Answer:

105.

I hope you have a good day :)

Answer:

option C

Step-by-step explanation:

Answer:

10%

Step-by-step explanation:

La teneur en fruits de son cocktail est calculée comme suit:

25% de jus de pomme 0.2L + 50% de jus d'orange 0.1L

0.25 × 0.2 + 0.5 × 0.1

0.05 + 0.05

= 0.10

Conversion en pourcentage

= 0.10 × 100%

= 10%

Par conséquent, la teneur en fruits de son cocktail est de 10%

Answer:

10

Step-by-step explanation:

30/100*x=3

Multiply both sides by 100 and divide both by 30

You get the answer x=10

Answer:

10

Step-by-step explanation:

DO this 3x100/30 and you get 10

Answer:

Obtuse Scalene Triangle

Give me Brainliest if I'm correct , please ! :)

Answer:

a) The margin of error = 0.11

b) The interval estimate = (0.74, 0.96)

c) Not valid because 68% = 0.68 is less than the values in the interval estimate

Step-by-step explanation:

The statistical data from the population and the simulation are;

The percentage of the people that liked the new chicken sandwich = 85% = The population proportion

The percentage the restaurant manager claims liked the new sandwich = 68%

The number of trials of the simulation = 100 trials

The sample size of each trial = 30

The point estimate of each trial = 0.85

The minimum sample proportion = 0.66

The maximum sample proportion = 0.88

a) The confidence interval = (0.66, 0.88)

By the half the range method, the margin of error is given by half the width of the confidence interval

∴ The margin of error, MOE = (0.88 - 0.66)/2 = 0.11

b) The interval estimate are the expected range of numbers for a parameters

The interval estimate = The point estimate ± MOE

∴ The interval estimate = 0.85 ± 0.11 = (0.74, 0.96)

Given that the manager's claim of 68% is not within the interval estimate, the manager's claim is not valid based on the expected values for the people that liked the new sandwich found with the point estimate and the margin of error

Answer:

6

Step-by-step explanation:

To breakeven means that you made exactly as much money as you spent, so if you spent $50 to make lemonade, you would need to make $50 in profits from selling to break even

first subtract the cost of making each horse from the price of selling each horse (you do this to find out how much profits he makes from one horse):

125 - 75 = 50

now divide 300 by 50 to find out how many horses need to be made to break even:

300 ÷ 50 = 6

Answer:

Quedan 511 páginas por leer en la tercera semana.

Step-by-step explanation:

Si el libro tiene 1267 y debe leerse en 3 semanas, se ha leído 189 páginas en la primera semana y 567 páginas en la segunda semana, es decir, el triple del número de páginas leídas en la semana anterior, la cantidad de páginas por leer para la tercera se determina mediante la siguiente sustracción:

[tex]x = 1267 - 189 - 567[/tex]

[tex]x = 511[/tex]

Quedan 511 páginas por leer en la tercera semana.

Answer:

50

Step-by-step explanation:

every 50 points it takes 1 hr

Find 2 points

I’ll use (1,75) and (3,175)

Slope = change in y over the change in x

Slope = (175-75)/(3-1)

Slope = 100/2

Slope = 50