**Answer:**

**Step-by-step explanation.**

**The HCF of 18 and 27 is 9**

It takes Paul 9 hours longer than Li Ming to paint a house. Working together they can do the job in 20 hours. How long would it take Li Ming, working alone, to paint the house ?

Li Ming can paint the whole house in 10 hours

The mixed number 2 5/6 is equivalent to a fraction with a

denominator of 6.

What is the missing numerator in the equivalent

fraction?

**Answer:**

6 x 2 = 12 then add 5, answer is 17

g Radio and television stations often air controversial issues during broadcast time and ask listeners and viewers to indicate their agreement or disagreement with a given stand on the issue. A poll is conducted by asking those listeners and viewers who agree to call a certain 900 telephone number and those listeners and viewers who disagree to call a second 900 telephone number. All respondents pay a fee for their calls. Does this polling technique result in a random sample

**Answer:**

NO, it does not.

**Step-by-step explanation:**

From the information provided, we know that the surveying method for the polling depends on the no. of calls got on the two sorts of 900 phone numbers.

This surveying strategy doesn't address a random sample in light of the fact that the viewers who see the show can be restricted. Additionally, among the viewers of the show, the reactions depend on viewers who intentionally approach to offer or air their opinion. Therefore, the acquired sample doesn't address a random sample and specifically, we can posit that the sample occurs to be a voluntary sample.

Suppose y varies directly with x and inversely with z. If y = 14 when x = 7 and z = 3, what is x when y = 3 and z = 8? Use the step-by-step process you learned to solve this problem.

Step 1: Set up the correct type of variation equation.

y =

✔ kx/z

Step 2: Determine the constant of variation.

k =

**Answer:**

The **constant of variation** k is 6 and the value of x is 4.

**Step-by-step explanation:**

What is **constant of variation**?

The **constant of variation** is the number that relates two variables that are directly proportional or inversely proportional to one another.

What is **direct variation**?

A **direct variation** is a proportionality relationship in which two quantities follow a direct relationship.

What is **inverse** variation?

**Inverse variation** states when one variable increases then the other variable decreases.

Given,

y=14 when x=7 and z=3

The variation equation is,

y=kx/z

Inputting the values,

14=(k*7)/3

14*3=7*k

42=7k

k=6

When y=3, z=8 we will find x.

y=kx/z

3=6*x/8

3*8=6*x

x=24/6

x=4

Hence, the value is 4.

To know more about **constant of variation**, **direct variation**, **inverse variation** here

https://brainly.com/question/11733777

#SPJ2

2 1/5 + 6 4/5 pls help

**Answer:**

2 1/5 + 6 4/5

= 2/5 + 24/5

= 26/5

= **5****.****2**

**Answer:**

[tex]8\frac{5}{10}[/tex]

**Step-by-step explanation:**

[tex]2 + 6 = 8\\\frac{1}{5} + \frac{4}{5} = \frac{5}{10}[/tex]

Let me know if this helps!

Find the area of the sector.

Answer:

D. 158.4 km²

Step-by-step explanation:

Area of sector = θ/360 * πr²

Where,

θ = 150°

r = 11 km

Substitute

Area = 150/360 * π * 11²

Area = 158.38863 ≈ 158.4 km² (nearest tenth)

PLEASE HELP !!!!!

What is the value of the missing angle?

**Answer:**

B

**Step-by-step explanation:**

180 - 100 = 80

80 = 30 = 110

180 - 110 = 70

**Answer:**

B

**Step-by-step explanation:**

100-30=70° Remeber this is a right triangle

This graph represents the height a baseball travels in t seconds.

How long is the height of the ball increasing?

0.5 seconds

1 second

2.4 seconds

30 seconds

We need to see the graph to answer this next time out a picture added

Is their a graph? To answer the question

Select the correct answer.

The figure PQRSTU represents the shape of the parking lot at a shopping mall. What is the area of the parking lot?

A.

834 square feet

B.

918 square feet

C.

984 square feet

D.

1,068 square feet

Reset

**Answer:**

Is there an image? I cant figure it out without the image

**Step-by-step explanation:**

What is (14x^2– 27x+9) / (7x-3)?

A. 7x-3

B. 2x-3

C. -211x+9

D. 2x-33

**Answer:**

B. 2x - 3

**Step-by-step explanation:**

[tex] \rm \frac{ {14x}^{2} - 27x + 9}{7x - 3} [/tex]

[tex] \rm = \frac{ \cancel{(7x - 3)}(2x - 3)}{ \cancel{7x - 3}} [/tex]

[tex] \boxed{ \rm \bold{= 2x - 3}}[/tex]

**Answer:**

[tex]\tt{}2x - 3[/tex]

**Step-by-step explanation:**

[tex] \tt{} \frac{(14 {x}^{2} - 27x + 9) }{(7x - 3)} [/tex]

[tex] \tt{} \frac{14 {x}^{2} - 6x - 21x + 9 }{7x - 3} [/tex]

[tex]\tt{} \frac{2x \times (7x - 3) - 3(7x - 3)}{7x - 3 } [/tex]

[tex]\tt{}2x - 3[/tex]

Help,,,,,,,,,,,,,,,........

B= 0.5

Because it’s right after A which is 0

Because it’s right after A which is 0

Round 329,167 to the nearest hundred

**Answer:**

329,200

**Step-by-step explanation:**

**Answer:**

329,200

**Step-by-step explanation:**

What is the 20th term of the arithmetic sequence

3, 9, 15, 21, 27, ...?

Answer: 117

Step-by-step explanation:

first comment on first response!!! Thank you btwww!

A $45 pair of shoes is on sale for 20% off. How much money is saved?

**Answer:**

$9

**Step-by-step explanation:**

HELP ASAP A factory makes car batteries. The probability that a battery is defective is is.

If 400 batteries are tested, about how many are expected to be defective?

A. 25

B. 40

C. 16

D. 375

375 is the ansewer wwrhttttttttttttttttttt

**Answer:**

25

**Step-by-step explanation:**

Raymond kept track of the number of hours that he spent practicing the piano each week for several weeks. He spent 2, 4, 8, 6, and 5 hours. What is the range of the data set? B. 5 hours O A. 2 hours O O O D. 6 hours C. 8 hours

The answer is D, 6 hours

What is the value of 4+2 +6r – tr when t =

=

- 3 and r = 5?

Enter your answer in the box.

you first substitute your values t and r ...Use BODMAS method ...Your final answer must be 51

Determine whether each ordered pair is a solution of the system of linear equations.

3y = 6x + 12

2x - y = -4

a. (-3,2)

b. (0,4)

a. Is (-3,2) a solution?

0 Yes

Ο Νο

b. Is (0,4) a solution?

O No

0 Yes

**Answer:**

(0,4)

**Step-by-step explanation:**

The given equations are :

3y = 6x + 12

2x - y = -4

If (-3,2) be the solution of the above equations,

3(2) = 6(-3) + 12

6 = -18+12

6≠ -6

2x - y = -4

2(2) -(-3) =-4

4+7 = -4

11 ≠ -4

No, (-3,2) is not the solution.

Similarly, put (0,4) in the abve equations,

3(4) = 6(0) + 12

12 = 12

and

2(0) - 4 = -4

-4 = -4

Hence, (0,4) is a solution of the given equations.

Brainliest for correct answer

**Answer:**

V =1884 in ^3

**Step-by-step explanation:**

The volume of a cylinder is given by

V = pi r^2 h where r is the radius and h is the height

V = pi ( 10) ^2 * 6

V = pi ( 600) in^3

Using 3.14 for pi

V = 3.14 * 600 in ^3

V =1884 in ^3

Week 5 Test Taking skills, Page 2

Name

3

Rodrigo bought a sheet of shark stickers. He used 8 of the 32 stickers to decorate his science project about

sharks.

Shark Stickers

DO

How many shark stickers did Rodrigo use on his science project?

A

24

B

18

с

20

D

30

It’s number 3

**Answer:**

20

**Step-by-step explanation:**

5/8 of 32

5/8×32=20

remember of means multiply

HOPE THIS HELP YOU HAVE A NICE DAY OR NIGHT

A marketing research company desires to know the mean consumption of milk per week among people over age 45. They believe that the milk consumption has a mean of 4.2 liters, and want to construct a 98% confidence interval with a maximum error of 0.08 liters. Assuming a standard deviation of 0.6 liters, what is the minimum number of people over age 45 they must include in their sample

**Answer:**

The minimum number of people over age 45 they must include in their sample is 305.

**Step-by-step explanation:**

We have that to **find **our [tex]\alpha[/tex] level, that is the subtraction of 1 by the confidence interval divided by 2. So:

[tex]\alpha = \frac{1 - 0.98}{2} = 0.01[/tex]

**Now**, we have to find z in the Ztable as such z has a pvalue of [tex]1 - \alpha[/tex].

That is z with a pvalue of [tex]1 - 0.01 = 0.99[/tex], so Z = 2.327.

**Now, find the margin of error M as such**

[tex]M = z\frac{\sigma}{\sqrt{n}}[/tex]

In which [tex]\sigma[/tex] is the standard deviation of the population and n is the size of the sample.

**Standard deviation of 0.6 liters**

This means that [tex]\sigma = 0.6[/tex]

**What is the minimum number of people over age 45 they must include in their sample?**

This is n for which M = 0.08. So

[tex]M = z\frac{\sigma}{\sqrt{n}}[/tex]

[tex]0.08 = 2.327\frac{0.6}{\sqrt{n}}[/tex]

[tex]0.08\sqrt{n} = 2.327*0.6[/tex]

[tex]\sqrt{n} = \frac{2.327*0.6}{0.08}[/tex]

[tex](\sqrt{n})^2 = (\frac{2.327*0.6}{0.08})^2[/tex]

[tex]n = 304.6[/tex]

Rounding up:

The minimum number of people over age 45 they must include in their sample is 305.

https://studio.code.org/projects/flappy/cYGc2S_X9-cgWtBUmJ5BJta5xku7iqyon0wzrKhC-Do

**Answer:**

so fun and amazing!

**Step-by-step explanation:**

A satellite system consists of 4 components and can function if at least 2of them are working. If each component independently works with probability 0.8, what is the probability the system will function?

**Answer:**

X follows binomial distribution with n=4, p=0.6, q= 0.4. To make the system function adequately, at least 2 components should work well.

**Step-by-step explanation:**

Hope this helps

**Answer:**

0.9728

**Step-by-step explanation:**

We have 2 options for the system to fail - no components work, or only one works.

The probability that no components work is:

[tex]0.2^4 = 0.0016[/tex]

The probability that one SPECIFIC component works and the others failed is:

[tex]0.2^3 \cdot 0.8 = 0.0064[/tex]

And because there's 4 components, the chance that EXACTLY ONE works but the others don't is:

[tex]4 \cdot 0.0064 = 0.0256[/tex]

So we sum the probabilities:

[tex]P_{failure} = 0.0016 + 0.0256 = 0.0272\\P_{works} = 1 - P_{failure} = 0.9728[/tex]

Whisper is exercised twice a day.

The first time is for 30 minutes.

The second time is for 11 hours.

i. Write down the fraction of a day that Whisper is exercised.

Write your answer in its simplest form.

ii.

Write down the fraction of a day that she is not being exercised.

Answer:

I:23/48

ii 25/48

Step-by-step explanation:

30min=0.5hr

total time exercised: 11+0.5=11.5hr

Divided by total hours of a day:

11.5/24=115/240=23/48

ii:(48-23)/48

i. 11.5/24hrs

ii.12.5/24hrs

STEP BY STEP EXPLANATION

1st time = 30 minutes

=0.5hr

2nd time=11hrs

Altogether =11.5hrs

1 day =24hrs

Fraction =11.5/24hrs

ii. Hrs not exercised = hrs in a day - hrs exercised

= 24hrs - 11.5hrs

= 12.5hrs

Fraction of day not exercised = hrs not exercised/hrs of the day

= 12.5/24hrs

ii.12.5/24hrs

STEP BY STEP EXPLANATION

1st time = 30 minutes

=0.5hr

2nd time=11hrs

Altogether =11.5hrs

1 day =24hrs

Fraction =11.5/24hrs

ii. Hrs not exercised = hrs in a day - hrs exercised

= 24hrs - 11.5hrs

= 12.5hrs

Fraction of day not exercised = hrs not exercised/hrs of the day

= 12.5/24hrs

IF YOU ANSWER ALL THESE QUESTIONS I WIL LGIVE YOU BRAINIEST AMD 40 POINTS COME UP WITH PROBLEMS THANKS

**Answer:**

WHY YOU ARE ALWAYS SAY THAT CAN YOU WHOLE QUESTION..

Please help I’ll mark you as brainliest if correct!

**Answer:**

B

**Step-by-step explanation:**

brainliest?

500 people are asked if they drink coffee.

9

10 say Yes.

20% of the people who say Yes drink at least three cups each day.

(b)

What fraction of the 500 people drink at least three cups of coffee each

day?

Give your answer in its simplest form.

**Answer:**

**Step-by-step explanation:**

2/10

help me please I will mark 5 stars please it is urgent

**Answer:**

a) 3sec

b) highest point of 50

c) at 0 by 8 sec

Please helpppp meeee

the answer to the question is A

blank plus 1/2 equals to 2/3

**Answer:**

1/6 + 1/2 = 2/3

**Step-by-step explanation:**

solve the simultaneous equation:6x+y=293x-y=7
Emily is developing a computer model of protist populations in certain areas of the ocean, and how they help maintain homeostasis in ecosystems. Photosynthetic protists play essential roles in the environment, especially in oceans and lakes. If a hypothetical catastrophic event drastically reduced the population of zooxanthellae, a photosynthetic protist with a specific habitat, which statement describes the most likely result? A. Almost half of the photosynthesis occurring on Earth would be in jeopardy, and species from shrimp to whales would lose an important food source. B. Kelp forests would experience a drastic reduction in size, eliminating shelter for many marine species and a food source for sea urchins. C. The health of coral reefs would suffer and reef populations would decrease in size and stability. D. The equilibrium of the ecosystem surrounding hydrothermal vents would be upset, leading to loss of diversification.
What is the difference between a national bank and a community bank?
What is a super PAC ?
What was a positive impact of political machines in the late 19th and early 20th centuries?
Which kind of essay uses the five senses to enhance the imagery of the setting?
An object is located 50.0cm from a converging lens having a focal length of 15.0cm. Which of the following statements is true regarding the image formed by the lens?A. It is virtual, upright, and larger than the objectB. It is real, inverted, and smaller than the object.C. It is virtual, inverted, and smaller than the object.D. It is real, inverted, and larger than the object.
What is the CDC recommendation for the influenza vaccine for health care personnel?
Between 1820 and 1850, some Americans discriminated against German immigrants because theywere Protestant.did not speak English.were hired as skilled workers.wanted to become farmers.
A relational database table is in ____ normal form if every non-key field is functionally dependent on the primary key.
shows a network. starting from the zero flow, i.e., the flow with for every directed edge in the network, use the ford-fulkerson labeling algorithm to find a maximum flow and a minimum cut in this network.
What is a primary in government?
The Ka of ammonium ion, NH4+, is 5.6 10 -10. Calculate the pH of a solution which is composed of 0.45M NH4+and 0.25M NH3.
What is the value of 4 3 answer?
Suppose that the United States and European Union are the only trading partners in the world. If the United States lowers import restrictions from the European Union, we would expect the: A) demand for euros to increase, appreciating the euro. B) demand for the dollar to increase, appreciating the dollar. supply of dollars to increase, appreciating the dollar. D) supply of euros to increase, depreciating the euro.
Why is the theme death important?
What are two important first steps in data analysis? -Cleaning the data and exploring it -Cleaning and scrubbing the data -the box plot and the 5 number summary -correlation and regression
1. which of the following best compares the structures found in plant cells and animal cells? plant cells have rigid cell walls and do not contain mitochondria or ribosomes while animal cells do. animal cells do not contain chloroplasts, cell walls, or a large central vacuole while plant cells do. plant cells contain rough endoplasmic reticulum and a golgi apparatus while animal cells contain smooth endoplasmic reticulum surrounded by lysosomes. animal cells contain cell walls and a large central vacuole while plant cells contain cell membranes and many small vacuoles.
Rank the compounds in each of the following groups in order of increasing acidity or basicity, as indicated, and explain the order you assign. (a) acidity: HCl, HBr, HI(b) acidity: NaHSO3, NaHSeO3, NaHSO4(c) basicity: Mg(OH)2, Si(OH)4, NaOH(d) acidity: HF, H2O, NH3, CH4(e) acidity: HOCI, HOCIO, HOCIO2, HOCIO3
Cristina asked Jos, "Did you watch television last night?" is this a statistical question