A local government wants to test a theory about the amount of water consumed by elderly people compared to young people. If the government uses a stratified random sample, what is an appropriate method for grouping the population? A. Group by the number of houses in each street. B. Group by ZIP code. C. Group by the amount of water stored by each house. D. Group by the members in each family.

Answers

Answer 1

Answer:

group by each member in each family. I got a 100%

Step-by-step explanation:

Answer 2

Answer:

group by each member in each family.

Step-by-step explanation:


Related Questions

USING SIMILAR TRIANGLES IN INDIRECT MEASUREMENT If the shadow of a tree is 14 m long and the shadow of a person who is 1.8 m tall is 4 m long, how tall is the tree? Which of the following proportions could not be used to solve the problem? 14/1.8 = x/4 x/1.8 = 14/4 x/14 = 1.8/4

Answers

Answer:

14/1.8 = x/4

Step-by-step explanation:

Using similar triangles,

height of man/length of man's shadow = height of tree/length of tree's shadow

1.8/4 = x/14

x/14 = 1.8/4

If we cross-multiply, we have

1.8 × 14 = x × 4

dividing both sides by 4 and 1.8,we have

14/4 = x/1.8

x/1.8 = 14/4

So, the two expressions we have are

x/14 = 1.8/4 and x/1.8 = 14/4.

So, the answer is 14/1.8 = x/4 since the product 1.8 × 14 = x × 4 cannot be expressed in the given ratio.

hello! i'll mark the best answer brainliest (:

Tatiana opens a bank account that pays interest compounded annually. Which of the following are reasonable interpretations of the expression 500(1.0325)^t in this context?
Select all that apply.

A. The account earns about 1.03% interest each year.
B. The account earns 3.25% interest each year.
C. The account earns 5% interest each year.
D. Tatiana's starting balance was $500.
E. After 1 year the account will be worth $500.

Answers

I believe the answers are A. The account earns about 1.03% interest each year. and D. Tatiana's starting balance was $500.

I hope this helps

Answer:

A and E

Step-by-step explanation:

Which equation describes the function?


Will give brainliest

Answers

Answer:

[tex]y = - \frac{7}{3} x + 4[/tex]

Step-by-step explanation:

I'm going to use the process of elimination to get rid of the equations. The equation for slope is y=mx+b with b being the y-intercept. As you can see the y-intercept in this graph is 4 which removes the third equation as a possible answer. The slope is moving from left to right in a downwards direction which means it is a negative slope. The only answer with a negative slope is b therfore it is your answer.

Please help ASAP thank you!

Answers

Answer:

y < 3

Step-by-step explanation:

If you put the equation on a graphing calculator it shows that.

    Please give me BRAINLIEST and THANKS <( ̄︶ ̄)>

Solve the equation.

$2v+7=3$

$v=$

Answers

If your equation is 2v + 7 = 3,

Subtract 7 from both sides to get 2v = -4

Then divide 2 on both sides and get v = -4/2

Then simplify to get v = $-2

PLEASE ANSWER QUICKLY WILL GIVE BRAINLIEST IF CORRECT

Find the circumference of a circle with a diameter of 400 cm. Use 3.14 for π.
A.
628 cm

B.
3.14 cm

C.
2512 cm

D.
1256 cm

Answers

Answer:

D. 1256 cm

Step-by-step explanation:

Divide the diameter by 2 to get the radius so 400/2 = 200

C = 2 π r = 2 · π · 200 = 1256.637

D, or 1256 cm :) good luck!

A first-degree equation in three variables graphs as a. a line c. a sphere b. a plane d. a paraboloid

Answers

Answer:

plane

Step-by-step explanation:

Answer:

B. A plane

Step-by-step explanation:

Consider the conic section C represented by the equation 9x2 – 25y2 = 225. Which of these is a characteristic of the graph of C? (A) Vertices at (3,0) (B) Vertices at (0, 5) (C) Asymptotes at y = + x (D) Asymptotes at y = x 3​

Answers

Answer:

The only true statement is:

(B) Vertices at (0, 5)

Step-by-step explanation:

We have the equation:

9*x^2 - 25*y^2 = 225

The graph of this equation can be seen below.

In the graph we can see:

We have two vertices, one at (0, 5) and another at (0, - 5)

Then option B) "Vertices at (0, 5)" is true.

Also in the graph you can see that we have (kinda linear) asymptotes at:

y = x + 5

y = -x + 5

y = x - 5

y = -x - 5

The two options for the asymptotes are:

(C) Asymptotes at y = + x

(D) Asymptotes at y = x 3​

So both of these are incorrect.

The slope of a line is 1, and the y-intercept is -1. What is the equation of the line written in slope-intercept form?

Answers

Answer:

y = x - 1

General Formulas and Concepts:

Algebra I

Slope-Intercept Form: y = mx + b

m - slope b - y-intercept

Step-by-step explanation:

Step 1: Define

Identify variables

Slope m = 1

y-intercept b = -1

Step 2: Write Equation

Substitute in general form:                                                                                  y = 1x + -1Simplify:                                                                                                             y = x - 1

Please help brainiest to correct answer pls show work if you can

Answers

Answer:

x= 5

the length = 13 meters

the width = 7 meters

Step-by-step explanation:

(2x+3)(x+2)=91

2x²+7x+6=91

2x²+7x-85=0

(2x+17)(x-5) =0

x=-17/2 or x = 5

the length = 2(5)+3= 13 meters

the width = 5+2 = 7 meters

What is the difference between the definitions for ray and line segment?

Only the definition of ray relies on an understanding of two directions.
Only the definition of line segment relies on an understanding of line.
Only the definition of ray depends on an understanding of infinite.
Only the definition of line segment depends on an understanding of point.

Answers

Answer:

Only the definition of the line segment depends on an understanding of point.

Step-by-step explanation:

Answer:

Maybe C. I'm not for sure.

A ray has one endpoint and the other end goes in infinitely. While a line segment has two endpoints

Step-by-step explanation:

put answer here :) lol

Answers

Answer:

fdvbggggggggggggggggg

Step-by-step explanation:

Answer:

Answer?

Step-by-step explanation:

abcdefg your cool B)

PLEASE HELP ME IM BEGGINGG

A spinner consists of eight equal regions as shown.


What is the probability that the arrow will land on a region lettered A and
then spun again and land on D?

Answers

Answer:

Pro of landing on A = 3÷8

Step-by-step explanation:

Pro of Landing on D =1÷8

Pro of all ={3÷8}+{1÷8}=0.5

Since the answers are on percentage you multiply by hundred

Therefore your answer will be 0.5 ×100

Find the slope of a line parallel to a line with a slope of 4/5

Answers

Answer:

slope = 4/5

Step-by-step explanation:

The question is asking us to find the slope of the line that's parallel to the line whose slope is 4/5.

Recall that parallel lines have equal slopes.

So the slope of the line that's parallel to the one with a slope of 4/5 is 4/5 too.

Therefore, slope = 4/5.

Find the axis of symmetry and the vertex of the graph of f (x) = x^2 - 16 + 55

Answers

Hi there!  

»»————- ★ ————-««

I believe your answer is:  

Vertex: (0, 39)

Axis of Symmetry: x = 0  

»»————- ★ ————-««  

Here’s why:

 I have graphed the equation on a program. When graphed, the the lowest point lies on the point (0, 39). This makes (0, 39) the vertex.

⸻⸻⸻⸻

The axis of symmetry is a vertical line that intercepts the vertex. The vertical line makes the parabola seem 'symmetrical'. The 'x' value of the vertex is usually the line of symmetry as well.

⸻⸻⸻⸻

The 'x' value of the vertex is '0', so the axis of symmetry is [tex]x = 0[/tex].

⸻⸻⸻⸻

See the graph that I have attached.

⸻⸻⸻⸻  

»»————- ★ ————-««  

Hope this helps you. I apologize if it’s incorrect.  

Answer:

For equation:

[tex]f(x)=x^2-16x+55[/tex]

Vertex: [tex](8,-9)[/tex]

Axis of symmetry, ([tex]x=8[/tex])

For equation,

[tex]f(x)=x^2-16+55[/tex]

Vertex:[tex](0,39)[/tex]

Axis of symmetry, ([tex]x=0[/tex])

Step-by-step explanation:

The x-coordinate of the vertex of a parabola indicates the line of symmetry of the parabola. Thus, to solve this problem, one must find the vertex of the parabola. This can be done through a process called completing the square.

Completing the square is a process that converts a quadratic equation in standard form into vertex form. The first step is to group the linear and quadratic terms. Then factor out the coefficient of the quadratic term. After doing so, add a term to make the group a perfect square trinomial, then balance the equation.

Possibility 1

If the given equation is the following,

[tex]f(x)=x^2-16x+55[/tex]

Group,

[tex]=(x^2-16x)+55[/tex]

There is no quadratic term, thus, complete the square,

[tex]=(x^2-16x+64)+55-64[/tex]

Simplify,

[tex]=(x-8)^2-9[/tex]

Vertex: [tex](8,-9)[/tex]

Axis of symmetry, ([tex]x=8[/tex])

Possibility 2

If the given equation is the following,

[tex]f(x)=x^2-16+55[/tex]

Combine like terms,

[tex]=x^2+39[/tex]

Put in vertex form,

[tex]=(x)^2+39[/tex]

Vertex:[tex](0,39)[/tex]

Axis of symmetry, ([tex]x=0[/tex])

What is a Translation?​

Answers

Answer:

The displacement of a figure or a shape from one place to another is called translation, which means a figure can be moved upward, downward, left, right, or anywhere in the coordinate system using translation. While translating, all the points will shift by the same number of units.

mark me brainliestt :))

In language- translation means converting one language to other .

.
Larry is starting his own lawn service company. He has initial startup costs totaling $300, plus ongoing operating expenses. The function representing Larry's expenses and the function representing Larry's income for lawn services are shown in the graph below.





Approximately how many lawns will Larry have to mow before he starts making a profit?
Anwer Choises:
Larry must mow approximately 300 lawns before he starts making a profit.
Larry must mow approximately 350 lawns before he starts making a profit.
Larry must mow approximately 25 lawns before he starts making a profit.
Larry will start making a profit when he mows his first lawn.

Answers

Answer:

Larry must mow approximately 25 lawns before he starts making a profit

Step-by-step explanation:

There are eight boys and eight girls in a
class. The teacher randomly selects one
student to answer a question. Later, the
teacher randomly selects a different student
to answer another question. The first
student is a boy and the second student is a
girl.

Answers

Answer:

Independent events - Random selection of  one

student - Selection of one boy to answer first question

Dependent Event - Selection of a girl student

Probability = 13.33 %

Step-by-step explanation:

The complete question is

Determine whether the scenario involves independent or dependent events. Then find the  probability

There are eight boys and eight girls in a

class. The teacher randomly selects one

student to answer a question. Later, the

teacher randomly selects a different student

to answer another question. The first

student is a boy and the second student is a

girl.

Solution

Independent events - Random selection of  one

student - Selection of one boy to answer first question

Dependent Event - Selection of a girl student

Probability

8C1 + 8C1/16C2

(8+8) /(8*15)

13.33 %

help me please!!!! asap Tia​

Answers

Answer:

All of them should be marked sicne they are all less than 12.

Step-by-step explanation:

Answer:

m = 6, m = 1, m = 5, m = 7

Step-by-step explanation:

All the options are solutions of m < 12.

Math Tutor Pay: $11.44 per hour
they work 13 hours
how much do they get paid in a-
per week
per month
per year​

Answers

Answer:

Per week: $1041.04Per month: $4610.32Per year: 55323.84

Answer:

1041$/1W(M-Sun)

892$/1W(M-SAT)

744$/1W(M-Fri)

Step-by-step explanation:

Go to sleep stoo naughty

A soda company spends $1200 per day on business expenses plus $1.10 per bottle.
They charge $2.50 for each bottle of soda they produce. How many bottles of soda
must the company sell in one day in order to equal its daily costs?

Answers

Answer: Hi

Step-by-step explanation:

Cost Price per bottle : $1.10

Selling price per bottle : $2.50

2.50 - 1.10 = 1.40

$1200=1.40B

B=858

The company must sell 858 Soda´s in order to equal it daily cost.

Hope this help. Be safe

Which of the expressions below are equivalent? 8x - 4 4x 4(2x - 1)

Answers

8x-4 and 4(2x-1)




4(2x-1) the four needs to be distributed in the parentheses.

4*2x=8x
4*(-1)=(-4)

8x-4=8x-4

$ 72 game; 20% discount

Answers

Answer:

14.4

Step-by-step explanation:

20 percent of 72 is 14.4

10.
Complete.

y^2 + 15y + 56 = (y + 7)(y + )

A. 8

B. –7

C. –8

D. 7

Answers

The answer to this question is A

Answer:

I would go with letter B. -7

Step-by-step explanation:

The two factors of a quadratic equation can be multiplied to form the original equation. Let the missing term be a:

y² + 15y + 56 = (y + 7)(y + a)

y² + 15y + 56 = y² + (7 + a)y + 7a

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

Step by Step Solution

More Icon

Reformatting the input :

Changes made to your input should not affect the solution:

Step by step solution :

STEP  1 :

Trying to factor by splitting the middle term

1.1     Factoring  y2+14y+49  

The first term is,  y2  its coefficient is  1 .

The middle term is,  +14y  its coefficient is  14 .

The last term, "the constant", is  +49  

Step-1 : Multiply the coefficient of the first term by the constant   1 • 49 = 49  

Step-2 : Find two factors of  49  whose sum equals the coefficient of the middle term, which is   14 .

Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above,  7  and  7  

                    y2 + 7y + 7y + 49

Step-4 : Add up the first 2 terms, pulling out like factors :

                   y • (y+7)

             Add up the last 2 terms, pulling out common factors :

                   7 • (y+7)

Step-5 : Add up the four terms of step 4 :

                   (y+7)  •  (y+7)

           

The solution is:

  y  =  -7  

 The solution is:

 y = -14 / 2 = -7

What is the slope of the line?

Answers

Answer:

7/4

Step-by-step explanation:

the slope rises 7 units then goes to the right of 4 units

Need help with school please

Answers

Answer:

47+16+ x =180

x =180- 63

x= 117

25 points :) please help!
Of you do I really really appreciate it!


Answers

Answer: Jessica wants 120 plants in her garden.

Explanation:
Lets find the area of the triangle first:
Tip: the formula can be base x height divided by 2 so you cant get confised about 1/2bh.

Any side of the triangle can be a base, once u find a base, there will always be one corresponding height.

In this case, the base is 12 feet
And the height is 5 feet because that side is perpendicular/corresponding to the base, meaning that the side connects to the base in a 90 degree angle.

So we have this:
12 x 5/2 = 30
The area of the triangle is 30 square feet.

Now, if Jessica wants 4 plants for each square foot of area, we do this:
4 x 30 = 120

Co.mment me if u have any questions
MARK BRAINLIEST PLS TY

Can help me with this?

Answers

Answer:I’m sorry this is hard I don’t think I have the right answer chose C

Step-by-step explanation:

What is an equation of the line that passes through the points (-2,-6) and (6,8)?

Answers

Answer:

y=7/4x–5/2

Step-by-step explanation:

You must find the slope first, let it be m

[tex]m = \frac{y2 - y1}{x2 - x1} \\ = \frac{8 - ( - 6)}{6 - ( - 2)} \\ = \frac{14}{8} \\ = \frac{7}{4} [/tex]

then insert tu the formula y=mx+c to find the c (c is the intercept of y axis) choose any point that you want. i use (6,8)

[tex]y = mx + c \\ 8 = \frac{7}{4} (6) + c \\ c = - \frac{5}{2} [/tex]

so the equation is

[tex]y = \frac{7}{4} x - \frac{5}{2} [/tex]

Sheila needs to spin a number greater than 2 to win. On the game spinner below, what is the probability of her winning?

Answers

Answer:

4

Step-by-step explanation:

I think I'm not sure but please let me know if it is helpful

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