Find the mean number of of hours for these students. Round to the nearest tenth

Answers

Answer 1

The answer is 13.42
You add up all the numbers and then divide by how many there are.
So its 15+20+11+20+11+9+8= 94. Then 94 / 7 = 13.42 .

Related Questions

Leyla needs to hire a plumber to fix a few things around her house. She will need plumbing service for a total of 3 hours. Which plumbing service should she go with to save money? How much will she save? Justify your answer.

Answers

Great! So let’s solve for Joe’s Plumbing charges first. To find his price for 3 hours, solve J(3)=45(3)=$135.

Now let’s find Mark’s Plumbing charges. To find his price for 3 hours, plug 3 into M(t)=40t+25. So, M(3)=40(3)+25=$145.

Therefore, Joe’s Plumbing is cheaper than Matt’s plumbing by 10 dollars for a 3 hour job.

Simplify 15+(2/3x)−7−(5/6x).

PS
The / is not a division sign. 2/3 and 5/6 are fractions

Answers

It gave me 48-x/6 hope it helps

A box contains 5 red marbles and 7 green marbles. Find the probability of drawing 2 red marbles WITHOUT REPLACEMENT

Answers

Answer:

5/33

Step-by-step explanation:

p(a)*p(b)

(Dependent events)

Answer:

5/33

Step-by-step explanation:

What is 32 squared root

Answers

Answer: 4√2

Step-by-step explanation:

Hey there! I will give the following steps, if you have any questions feel free to ask me in the comments below.

Try multiplying 4*4*2 = 32. So you would bunch up those two 4's and so it would be the front of the answer. Then you would square root 2 because it is remaining.

~I hope I helped you! :)~

A juice shop uses 1/2 of a bag of oranges to make 5 glasses of orange juice. What fraction of a bag of oranges did the shop use to make one glass?

Answers

Answer: 0.1 OR 1/10

Step-by-step explanation:

Think about it: There's 1/2 bag of oranges, and you wanna know what number of oranges used in the juice. Take 1/2, and divided it by 5. You get 0.1, then you should turn it into a fraction, giving you 1/10.

Answer: 0.1 OR 1/10

Step-by-step explanation:

let America be America meaning

Answers

Answer:

Let America be America Again Analysis In Langston Hughe's poem “Let America be America Again” he talks about how America should return to the way that it was perceived to be in the dreams before America was truly America. Throughout the poem, he uses various methods to evoke the patriotic images and dreams that he feels America should and will eventually be. Hughes states that America is supposed to be a place of equality for everyone including both white and colored people.

Step-by-step explanation:

If it was helpful can I plz have a brainliest

A laptop computer at Best Buy costs $1250. The sales tax in Virginia is 5.3%. How much will you pay in total for the laptop including tax?

Answers

Answer:

66,25

Step-by-step explanation:

Answer:

$1316.25

Step-by-step explanation:

1250 * 5.3% = 66.25

1250 + 66.25 = 1316.25

At a sale, the $39.97 original price of the shirt was marked down to $15.99. About
what percent of decrease is this?

Answers

249.96

Step by step solution

39.97x100 divided by 15.99 gives the the answer

Which one of these is a factor in this equation?

Answers

Answer:

Step-by-step explanation:

Because when a expression or number is multiplied by another expression or number it makes a equation

What is the equation of the line that is parallel to the line y=3x-11 and
passes through the point (1, -6)?
O A. y=3x-9
B. y=-3x-3
O C. y=-1/3x-17/3
O D. y= 3x + 6

Answers

Answer:

Step-by-step explanation:

Answer:

A. y = 3x - 9

Hope this helps!

By the way, those aren't Z's, I'm not sure what they are.

Answers

Answer:

<a + <b=90°

50+4x=90

4x=40

x=10

The temp at a mountain base camp was -5 degrees Celsius on Wednesday. Thursday morning the temp was 2 degrees lower than it was on Wednesday. by Thursday evening the temp was 1 degree Celsius lower than it was that morning. What was the temp at Thursday morning.

A.-9
B.-8
C.-7
D.-6

Answers

Answer:

-8

Step-by-step explanation:

Hey guys can you help me?

Answers

Answer:

850

Step-by-step explanation:

2×400=800

2×20=40

2×5=10

800+40+10=850

Nicole won 85 super bouncy balls playing
the bean bag toss at her school's game
night. Later, she gave four to each of her
friends. She only has 5 remaining. How
many friends does she have?

Answers

Answer:

20 friends

Step-by-step explanation:

85 balls - 5 remaining = 80

80 ÷ 4 balls each = 20 friends

f (x)=-x2 + 4x, solve for f(3)

Answers

Answer:

f(3) = 6

Step-by-step explanation:

F(3)=-(3)2+4(3)

f(3) = -6 + 12

f(3) = 6

In the diagram below, FAD || EHC, and ABH and BC are drawn. F А B H C If mZFAB = 48° and mZECB = 18°, what is mZABC? 1) 18° 2) 48° 3) 66° 4) 114° O Option 1 O Option 2 O Option 3 O Option 4

Answers

Answer : (3) 66°

Step-by-step explanation:

180 - (48 + 66)

180 + 114

=66

The measure of m ZABC is 66 degrees.

We have given that,

In the diagram below, FAD || EHC, and ABH and BC are drawn. F А B H C If mZFAB = 48° and mZECB = 18°.

We have to determine mZABC

What the angle?

An angle is formed when two straight lines or rays meet at a common endpoint. The common point of contact is called the vertex of an angle.

180 - (48 + 66)

180 + 114

=66

Therefore the measure of m ZABC is 66 degrees.

To learn more about the angle visit:

https://brainly.com/question/25770607

#SPJ2

3/4(x+8) > 1/2(2x+10)

Answers

3x/4+6 and x+5
Pls mark brainliest

I drive at 55 miles per hour, and my trip will takr 5 hours. Proportional or non proportional

Answers

Answer:

Proportional

Step-by-step explanation:

Here, we want to know if the distance at the given time will be proportional

What we will do here is to simply divide the distance by the time

Mathematically, that will be 55 miles/ 5 hours = 11 miles / hour

So this means that in an hour, 11 miles will be traveled

This expression is proportional

I went ____ the store. Jennifer wanted to go, ____. fill in will make brainiest

Answers

I went to the store. Jennifer wanted to go, too.

Solve
7 1/2 ÷ (4 1/2 - 5 1/8)

Answers

Answer:

-12

Step-by-step explanation:

Answer:

[tex] \frac{71}{2} \div ( \frac{41}{2} - \frac{51}{8} )[/tex]

[tex] \frac{71}{2} \div ( \frac{164 - 51}{8} )[/tex]

[tex] \frac{71}{2} \div \frac{113}{8} [/tex]

[tex] \frac{71}{2} \times \frac{8}{113} [/tex]

[tex] \frac{284}{113} [/tex]

Calculate the slope between the points: (3, -5) and (6,-5)
а
m=10/3
b
m=0
C
m=undefined
d
m=-10/3

Answers

Answer:

Step-by-step explanation:

Slope = 0/3 = 0

Add the following rational number.
-2/3+5/6

Answers

Answer:

1/6

Step-by-step explanation:

-2/3 = -4/6

so, -4/6 + 5/6 = 1/6

First you should make sure the denominators are the same

-2/3 = -4/6

Now add

-4/6 + 5/6 + 1/5

Hope this helped :)

Find the slope.of the line that passes through (7,5) and (3,12) simplify it

Answers

Answer:

there's no way to simplify 7/-4

in other formula it may be -4/7 but still can't be simplify.

in other way it will become a decimal

Step-by-step explanation:

1. Remember to make it as if it was a table.

2. Then you see if your #s are going decreasing or increasing(if they are decreasing that's a negative right there)

3.In the formula that I did the result of y is going over x but still works ;v

In the diagram below, find the value of y.

Answers

Answer:

y=130

Step-by-step explanation:

1) combine all like terms for the inside angles of the triangle

(3x-19) + (4x+8) + (x+7)3x-19+4x+8+x+78x-4

2) because the sum of all angles = 180 add that to the sum of all like terms

8x-4=180add 4 on both sides and divide both sides by 8this should be x=23

3) now you replace the x's with 23

(3(23) -19)69-1950

4) now we know that (3x-19)=50

5) take 180 and subtract 50

this is because y and (3x-19) creates a supplementary angle which also equals 180

6) 180-50=130

The graph of a function is shown below 8 Which inequality represents the domain of the function?

Answers

nuts gotten you really thought 10$1

If there are 4 ships at a port and the first one leaves and comes back every three weeks, the second one every nine weeks, the third one every 12 weeks, and the fourth every 24 weeks when will they all be in the port at the same time/when will they be there all at the same week

Answers

Answer: After 72 weeks they will be in the port at the same time.

Step-by-step explanation:

Given, Total ships = 4

The first one leaves and comes back every 3 weeks, the second one every 9 weeks, the third one every 12 weeks, and the fourth every 24 weeks .

So, the number of weeks they will take to be in the port at the same time = L.C.M. (3, 9, 12 , 24) (L.C.M. = least common multiple)

Since, 9= 3 x 3

12 = 2 x2 x 3

24 = 2 x 2x 2 x3

then, L.C.M. (3, 9, 12 , 24)= 2 x 2x 2 x 3 x3 =72

Hence after 72 weeks they will be in the port at the same time.

2/9x + 3 > 4 5/9
what graph shows the values that satisfy the expression

Answers

Answer:

Step-by-step explanation:

In graphing inequalities, the first thing to do is graph the equation first irregardless of the inequality symbol. In the given problem, the equation to be graphed is f(x) = 2/9x + 3. Since it has a general form of y=mx + b, this is a linear function. Plot the graph by assigning arbitrary points of x, then you get the corresponding f(x) values. Graph the x values against the f(x) values. The blue line the attached picture will be formed.

Next, you solve the equation by finding x. Just don't mind the inequality symbol:

2/9 x + 3 > 4 5/9

2/9x > 4 5/9 - 3

2/9x > 14/9

x > 14/9 ÷ 2/9

x > 7

Hence, the value of x must be greater than 7. To show this in the graph, find the line where x=7. Create a partition using that line, then shade the rest of the portion where x is greater than 7 until infinity.

Sarah is doing research on the average age of first-year resident physicians. She wants her estimate to be accurate to within 1 year. From past studies, she knows the population standard deviation is 8.265. How many first-year residents must she survey to be 95% confident?

Answers

Answer: The number of first-year residents she must survey to be 95% confident= 263

Step-by-step explanation:

When population standard deviation ([tex]\sigma[/tex]) is known and margin of error(E) is given, then the minimum sample size (n) is given by :-

[tex]n=(\dfrac{z^*\sigma}{E})^2[/tex], z* = Two-tailed critical value for the given confidence interval.

For 95% confidence level , z* = 1.96

As, [tex]\sigma[/tex] = 8.265, E = 1

So, [tex]n= (\dfrac{1.96\times8.265}{1})^2 =(16.1994)^2\\\\= 262.42056036\approx263\ \ \ [\text{Rounded to the next integer}][/tex]

Hence, the number of first-year residents she must survey to be 95% confident= 263

PLSSS HELP ME!!!!! I WILL!!!! MARK!!!!!

Answers

Answer:

23.1

Step-by-step explanation:

(4.2)(11)(0.5)

3
Solve each equation.
r - 10 = 4

Answers

Answer:

r=14

Step-by-step explanation:

14-10=4

10+4=14

14-4=10

tada

Answer:

Step-by-step explanation:

r - 10 = 4

r = 4 + 10

r = 14

hope this helps you!

Other Questions

for slaves family and ____ were the primary means of resistance and survivalrunning awayreligionorganized protestss*icide Use the passage below to answer all parts of the question that follows.No ruler took more liberties with his religion than Akbar, the greatest of the Mughals, the Muslim dynasty that dominated India between the early 16th and 18th centuries. Like Ashoka and Gandhi, Akbar constructed a religious ideology that served to hold together a diffuse polity as it fed his own soul.It began with pragmatic policies of tolerance. Akbar had inherited the throne, at the age of 13, in 1556. In 1579 he abolished the jiziya, a tax imposed on all but the poorest non-Muslims. This was the most notable in a series of measures to recruit the Hindu majority and others to the cause of unifying and expanding his empire. He could be ruthless: his troops massacred 20,00025,000 non-combatants after a four-month siege of Chitor, a nearly impregnable Hindu fortress in Rajasthan. But he preferred incentives to coercion. He defeated the war-like Rajputs, but gave them rank and married their princesses, who were permitted to conduct Hindu rites in the harem. The Mughal-Rajput alliance was a bulwark of his empire."Multicultural Akbar, The Economist, 1999a) Explain ONE specific political development that resulted from the conditions created by the religious policies described in the passage.b) Explain ONE specific change to Muslim-Hindu relations that resulted from the conditions created by the religious policies described in the passage.c) Explain ONE specific consequence of the policies described in the passage on religious minorities. What do you call the tool that summarizes all the chemical elements into a table?C. Elemental TableD. Periodic TableA. Table of SymbolsB. Periodic Tale of Elements In 1827, John Walker, a druggist in a small English town, tipped a splint with sulphur, chlorate of potash, and sulphid of antimony, and rubbed it on sandpaper, and it burst into flame. The druggist had discovered the first friction-chemical match, the kind we use to-day. It is called friction-chemical because it is made by mixing certain chemicals together and rubbing them. Although Walker's match did not require the bottle of acid, nevertheless it was not a good one. It could be lighted only by hard rubbing, and it sputtered and threw fire in all directions. In a few years, however, phosphorus was substituted on the tip for antimony, and the change worked wonders. The match could now be lighted with very little rubbing, and it was no longer necessary to have sandpaper upon which to rub it. It would ignite when rubbed on any dry surface, and there was no longer any sputtering. This was the phosphorus match, the match with which we are so familiar., a druggist in a small English town, tipped a splint with sulphur, chlorate of potash, and sulphid of antimony, and rubbed it on sandpaper, and it burst into flame. The druggist had discovered the first friction-chemical match, the kind we use to-day. It is called friction-chemical because it is made by mixing certain chemicals together and rubbing them. Although Walker's match did not require the bottle of acid, nevertheless it was not a good one. It could be lighted only by hard rubbing, and it sputtered and threw fire in all directions. In a few years, however, phosphorus was substituted on the tip for antimony, and the change worked wonders. The match could now be lighted with very little rubbing, and it was no longer necessary to have sandpaper upon which to rub it. It would ignite when rubbed on any dry surface, and there was no longer any sputtering. This was the phosphorus match, the match with which we are so familiar.In the above paragraph , what was the main idea first president???? If n divided by m equals 7/8, what does m divided by n equal? I need it done assap What is the total surface area of the right regular pyramid with a square base? What group of organic compounds include starch?a Carbohydratesb LipidsThingC Proteinsd Nucleic Acids Rita just bought a car for 15,000. She paid 20% down and borrowed the remainder at an annual interest rate of 9.0%. The loan will be repaid over four years with monthly payments of $298.62. How much is rita's down payment and how much did she borrow? Calculate the Social Security and Medicare tax that would be applied to an annual salary of $235,430. Use $106,800 formaximum taxable earnings.a. Social Security tax: $1,459.67, Medicare tax: $341.37b. Social Security tax: $14,596.66, Medicare tax: $3,413.70c. Social Security tax: $662.16, Medicare tax: $341.37d. 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(But don't tell her.)Review the first sentence:At first, I dreaded going to sixth-grade camp.What is the connotation showing here? 6 is added to the square of a number ok so how do u divide decimals by a whole number like for example 9.6 divided by 3 Solve the equation for x: 3x=.5 2. The Virginia militia who fired the first bullets for the British was led byplz helppp You roll two dice. The first dice shows a ONE and the other dice rolls under the table and you cannot see it. Now, what is the probability that both dice show one? Someone can please describe what happens to the valence electrons when two elements form an ionic compound? WILL REWARD BRAINLIEST!!!!Magnesium forms a __ion and wants to (gain/lose) __electrons. Bromine forms a ___ ion and wants to (gain/lose)electrons.