Mathematics High School

The manager of a shopping center wishes to obtain information on the shopping habits of people in the area. The area contains four neighborhoods of varying populations. The manager suspects that the shopping habits may be different in different-sized neighborhoods. Which of the following sampling designs would be most effective in gathering the information the manager requires?
A. a convenience sample from the area
B. a simple random sample from the area
C. a cluster sample using the neighborhoods as clusters
D. a stratified sample from the neighborhoods in the area
E. an online poll that invites all people from the neighborhoods in the area to participate

Answers

Answer 1

Answer:

defintly A

Step-by-step explanation:

because all the others are inconvenient and bad

Answer 2

Answer:

Step-by-step explanation:

Because you want to be able to see data from all neighborhoods.

Related Questions

Please help with this question. Thank you!

Answers

Answer:

403.8 cm

Step-by-step explanation:

Refer to the picture that given

Sarah walker 3 miles in 45 minutes. What is her average minutes per mile

Answers

0.067 mi/min

Step-by-step explanation:

Distance = 3 miles

Time = 45 minutes

Average Speed = ?

[tex]Average \: Speed = \frac{distance}{time} \\ = \frac{3}{45} = \frac{1}{15} \\ = 0.067[/tex]

Answer:

I think the answer is 15.

Step-by-step explanation:

Just divide 45 from 3 then you will get the results.

On a family road trip, Mr. Edwards travels 130 miles in two hours. At this rate, how many miles will he travel in 30 minutes? (watch the time on this one!) Group of answer choices

Answers

Answer:

32.5 miles in 30 minutes.

Step-by-step explanation:

There are a total of 4 - 30 minute segments in a period of two hours. Therefore, in this question, we can simply divide the total distance that Mr Edwards travelled during those two hours by the 4 segments, and that would give us the distance travelled in a single segment of 30-minutes.

130 / 4 = 32.5 miles

Finally, we can see that Mr Edwards travelled 32.5 miles in 30 minutes.

whats 14 4/10 - 13 1/3 ASAP

Answers

Answer:

1 1/15

Step-by-step explanation:

Answer:

16/15 or 1.06.. or 1 1/15

Step-by-step explanation:

Need Help ASAP! Thank you!

Answers

Answer:

Step-by-step explanation:

B because the slope of f(x) is 1 yet the slope of g(x) is 1/3

A line passes through the points (4,-1) and (2.3). What is the slope of the line?

Answers

Answer:

-2

Step-by-step explanation:

i got it right

What is the value of
[
3
(
−
2
)
−
7
]
÷
(
1.5
+
0.5
)
?

Answers

رحمة الله على روحك. الله عظيم.

Answer:

-6.5

Step-by-step explanation:

PEMDAS

Calculators cannot display repeating decimals. Calculators always round.
Zeke's calculator displays decimals to 4 places. He uses his calculator to find the
decimal equivalent for each of the fractions below.
For each number, choose what his calculator will display, as the decimal equivalent.
Then choose whether or not this is the exact decimal equivalent.

Answers

Answer:

1. 0.333 No

2. 0.3 or 0.300 Yes

3. 0.667 No

Step-by-step explanation:

What is the value of x?

Answers

Answer:

x = 8

Step-by-step explanation:

recall that all internal angles of a triangle sum up to 180 deg

we are given that ∠F is a right angle = 90 deg

Simply sum all all the angles and equate the sum to 180 deg

90 + (3x+29) + (5x-3) = 180

90 + 3x+29 + 5x-3 = 180

116 + 8x = 180 (subtract 116 from both sides)

8x = 180 - 116

8x = 64 (divide both sides by 8)

x = 64/8

x = 8

I believe it is 8 since the three angles must add up to 180°

what is 1.24 x 10^ -2 in standard form ?

Answers

Answer:

0.0124

Step-by-step explanation:

The negative sign means that we need to move the decimal sign to the left. Since it's -2, the decimal place will be moved to 2 places to the left. From 1.24, it will become 0.0124

The answer would be:
0.0124

Explanation:
You are moving 2 decimal places backwards as you are multiplying by 10^-2.

I hope this helped !

What is the correct answer?

Answers

Answer:

2x = 2.50

Step-by-step explanation:

Answer:

2x = 2.50

Step-by-step explanation:

This can be the answer or it can be the other way around

help fast timed hurry please

Answers

Answer:

b: 4

Step-by-step explanation:

Answer:

B:4

Step-by-step explanation:

I WILL GIVE BRAINLIEST:)) Use the table to find the products of the two polynomials. Write your answer in descending order.

Answers

Answer:

A) 4[tex]x^{4}[/tex]-4[tex]x^{3}[/tex]-16[tex]x^{2}[/tex]+16x

B)4[tex]x^{4}[/tex]-4[tex]x^{3}[/tex]-16[tex]x^{2}[/tex]+16x

Step-by-step explanation:

look at picture

which property would allow you to use mental computation to simplify the problem 27+15+3+5?

Answers

Answer:

addition

Step-by-step explanation:

There is only plus signs

Graph this function:
y - 3=1/4 (x + 3)
Click to select points on the graph.

Answers

Y=1/4x+15/4
You can draw it like this:

Multiply out and simplify: (x + 6)(x - 2)

Answers

Answer:

x squared+4x−12

Step-by-step explanation:

Answer:

[tex] {x}^{2} + 4x - 12[/tex]

Step-by-step explanation:

[tex](x + 6)(x - 2)[/tex]

[tex] = > x(x - 2) + 6(x - 2)[/tex]

[tex] = > {x}^{2} - 2x + 6x - 12[/tex]

[tex] = > {x}^{2} + 4x - 12[/tex]

Find E and F!! Please and thanks!

Answers

Answer:

m∠E = 61°

m∠F = 61°

General Formulas and Concepts:

Pre-Alg

Equality Properties

Geometry

Congruent AnglesAll angles in a triangle add up to 180°

Step-by-step explanation:

Step 1: Define

m∠D = 58°

m∠E = m∠F = x

Step 2: Set up equation

58 + x + x = 180

Step 3: Solve for x

Combine like terms: 58 + 2x = 180Subtract 58 on both sides: 2x = 122Divide 2 on both sides: x = 61°

Step 4: Find angle measures

Define: m∠E = x°Substitute: m∠E = 61°Define: m∠F = x°Substitute: m∠F = 61°

y−2x=4
3x−5y=15

The system of equations above is only true if x=-6 or x=-5 or x=5 or x=10 and y=-10 or y=-8 or y=-6 or y=3

Answers

Answer:

The answer is x=-5 and y= -8

Step-by-step explanation:

In ΔBCD, the measure of ∠D=90°, CB = 61, DC = 60, and BD = 11. What is the value of the tangent of ∠B to the nearest hundredth?

Answers

Answer:

5.45

Step-by-step explanation:

just did on delta math

Answer:

5.45

Step-by-step explanation:

tan B =tanB= adjacent / opposite = 60/11

≈5.4545≈5.45

) (i) Simplify:
Permudahkan:-
9 + 3t - 4

Answers

Answer: =3t+5

Step-by-step explanation:

hope this helped

6. Amelia is building a fence and wants it to be 40 feet long. Each panel is 8 feet long, and
she will need a post at each end and between each panel. If she does NOT plan to buy
any extra for waste, how many panels and posts will she need?

Answers

Answer:

Step-by-step explanation:

If you know your multiplication, you would know that 8x5=40. so, 40 divided by 8 equals 5. and if you dont have 8x5 memorized, do 5x10. 50. 10-8=2. 5x2=10. 50-10=40. Voila!

Jimmy purchased 15 tickets to a concert and spent $140. He purchased some children's tickets and some adult tickets. The children's tickets cost $7 each and the adult tickets cost $12 each. Write a system that represents this situation. How many of each did Jimmy purchase?

Answers

Answer:

Jimmy purchased 8 of the children's ticket and 7 of the adult's ticket.

Step-by-step explanation:

Let c = children tickets

Let a = adult tickets

Given the following data;

Number of tickets = 15

Total amount spent = $140

Cost of each children ticket = $7

Cost of each adult ticket = $12

*Translating the word problem into an algebraic equation (system)*

For the total number of tickets;

[tex] c + a = 15 [/tex] .........equation 1

For the total amount spent;

[tex] 7c + 12a = 140[/tex] ..........equation 2

*Solving the linear equation by using the substitution method*

Making c the subject in equation 1:

[tex] c = 15 - a[/tex] .......equation 3

Substituting "c" into equation 2;

[tex] 7(15 - a) + 12a = 140 [/tex]

Simplifying the equation, we have;

[tex] 105 - 7a +12a = 140[/tex]

[tex] 105 + 5a = 140[/tex]

Rearranging the equation, we have;

[tex] 5a = 140 - 105[/tex]

[tex] 5a = 35[/tex]

[tex] a = \frac {35}{5} [/tex]

a = 5 (For the $12 adult ticket).

To find the number of children tickets;

Substituting "a" into equation 3;

[tex] c = 15 - 7[/tex]

c = 8 (For the $7 children ticket).

x +y = 4
Graph the following equation on the coordinate grid blow

Answers

I am gonna passed a photo

Pls I need help !!!!!

Answers

Answer: 6.324555 ?

Step-by-step explanation: The distance formula is the square root of

((-5-(-7))² + (7-1)²)

(-5-(-7))=2, and 2² = 4.

(7-1)=6, and 6²=36.

4+36=40

the square root of 40 is about 6.324555.

Sorry if I got this wrong

When factored completely, which is a factor of 6x^3 - 12x^2 - 48x?

Answers

Answer:

The answer is 6x(x+2)(x-4)

help again...brainliest

Answers

Answer:

Step-by-step explanation:

Atom is the smallest thing g possible and organ is the biggest on that list.

Complete the sentence.

A ___ is an amount of decrease in price.

Answers

Answer:

Discount ?

Step-by-step explanation:

A discount is an amount of decrease in price.

Ashley found 2 boxes of sugar in the kitchen. The green box is 1.26 kg and the red box is 1.026 kg. Which box contains more sugar?

Answers

Answer:

Answer:

Green box contains more sugar.

Step-by-step explanation:

Consider the provided information.

Ashley found 2 boxes of sugar in the kitchen.

The green box says 1.26 kg and the red box says 1.026 kg.

we need to find which box contains more sugar.

To find this we will first check the digit at ones place.

Both the digit has 1 at the ones place. So now check the digit at tenths place.

1.26 has 2 at tenths place while 1.026 has 0 at tenths place.

As we know 2 is greater than 0, thus the number 1.26 is greater than 1.026.

Hence, green box contains more sugar.

The green box has more sugar because if you convert it to pounds the red box has 2.26 pounds of sugar while the green box has 2.777825 pounds.

Determine if the side lengths could form a triangle. Use an inequality to prove your answer.

a) 16 m, 21 m, 39 m

b) 34 km, 27 km, 58 km

c) 29 ft, 38 ft, 9 ft

Answers

9514 1404 393

Answer:

a) no

b) yes

c) maybe (no)

Step-by-step explanation:

There are two versions of the triangle inequality. One requires ...

a + b > c

for any triple of side measures a, b, c.

The other allows ...

a + b ≥ c

which admits "triangles" that have zero height and look like line segments.

Most questions asking "do these lengths form a triangle" are concerned with the "greater than" case, and disallow the "or equal to" case.

[tex]16+21=37\ngtr39\qquad\text{not a triangle}[/tex]

[tex]27+34=61>58\qquad\text{could be a triangle}[/tex]

[tex]9+29=38\ge38\qquad\text{could be a triangle if "equal to" is allowed}[/tex]

Mr. Duncan earns 75$ a day plus 35$ for each car he sells. if c is his total earnings and x is the number of cars he sold, what is the equation

Answers

Answer: c= 35x + 75

Step-by-step explanation:

If he earns $75 then that will be the constant amount which means it will never change, plus $35 for x cars, will give us the expression 35x + 75 and that has to equal c which is his total earnings.

Answer:

c = 35x + 75

Step-by-step explanation:

Daily pay = $75Commission for each car = $35

Total earnings for x cars sold:

c = 35x + 75

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