Mathematics Middle School

an oil tanker can be emptied by the main pump in 5 hours. an auxiliary pump can empty the tanker in 8 hours. if the main pump started at 5 pm, when should the auxiliary pump be started so that the tanker is emptied by 9 pm?

Answers

Answer 1

Answer:

1 pm

Step-by-step explanation:

1 + 8 = 9

Answer 2
1pm is the correct answer
8+1=9

Related Questions

eight workers can clear twenty acres of a field in three days. how many workers are needed to clear fifty acres in five days

Answers

53 workers are needed
hmm….. 53 workers are needed.

Plz help will be marked BRAINLIEST
Thanks !

Answers

Answer:

The first two

Step-by-step explanation:

Do the parenthesis of the first and you will get the original equation.

Multiple the second with 4 and you will get the original equation too.

^ Their answer is correct, the first two

HELPPPPPP QUICKKKKKHELPPPPPP QUICKKKKKHELPPPPPP QUICKKKKK

Answers

Answer:

A

Step-by-step explanation:

Follow thw line to the segment

Answer:

A

Step-by-step explanation:

solve it asap.........

Answers

Answer:

it is D

Step-by-step explanation:

i am not sure if this is right

Answer:

Option D, The center of the data is shown by it's median and mode. The median is 3 and the mode is 2 and 3

Step-by-step explanation:

The data set is: 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 5, 6

Calculating the median would result in 3

Calculating the mode would result in 2 and 3

Hope this helps!

Find the difference. 7.6 - 5.88

Answers

Answer:

1.72

Step-by-step explanation:

Would end up being the difference.

The difference is -1.72

Line segment AB is the diameter of a circle. Find the center of the circle if:

A = (-1, 7) and B = (-5, 2)

Answers

Answer:

[tex]midpoint = \frac{-1 + -5}{2} , \frac{7+ 2}{2}[/tex]

(-3,[tex]\frac{9}{2\\}[/tex]) is the center of the circle

Step-by-step explanation:

You use the midpoint of the two point given to us.

Hope this helped

the center of the circle is (-3,9/2)

Collins has a part-time job as a dog walker. The table below shows the amount of money Collins earned for different numbers of hours of work:


Collins' Earnings from Dog Walking
Number of Hours Worked Money Earned (dollars)
5 30
6 36
8
66


Part A: What are the missing numbers in the table? Show your work. (4 points)

Part B: Collins also does part-time yard work. The ratio of the number of hours Collins works to the money he earns in dollars is 1:7. Create a table to show the money earned by Collins for 5, 6, and 8 hours of doing yard work. (3 points)

Part C: How many more dollars does Collins earn doing yard work for 5 hours than working as a dog walker for 5 hours? Show your work. (3 points)

Answers

5HRx5=30

6HRx5=36

8HRx5=40

66HRx5=330

HR stands for hours

Oops sorry this only works for part 1 of your problem

Answer:

30

36

40  

330

HR stands for hours

Find the mean, median, and mode of the data set. Round to the nearest tenth.

5, 7, 2, 6, 7, 10, 12, 7, 9, 13, 5

Answers

Answer:

The mean is 7.5.

The median is 7.

The mode is 7.

Step-by-step explanation:

To find the mean, add up all the numbers in the data set and then divide the sum by the total number of values.

5 + 7 + 2 + 6 + 7 + 10 + 12 + 7 + 9 + 13 + 5 = 83

83 divided 11 equals 7.5.

To find the median, arrange all the numbers in the data set from smallest to largest and then find the number that is in the middle of the set.

To find the mode, put the numbers in order from least to greatest and count how many times each number occurs. The number that occurs the most is the mode.    

the mean is 7.5 the median is 7 and more is 7

Can I get helpppp plzz...also give steps

Answers

Answer:

3 inches

Step-by-step explanation:

Volume of a hemisphere = [tex]\frac{2}{3}[/tex]π[tex]r^{3}[/tex]

=> 18π = [tex]\frac{2}{3}[/tex]π[tex]r^{3}[/tex]

=> 18 = [tex]\frac{2}{3}[/tex][tex]r^{3}[/tex]

=> [tex]r^{3}[/tex] = 18 × [tex]\frac{3}{2}[/tex]

=> [tex]r^{3}[/tex] = 27

=> r = [tex]\sqrt[3]{27}[/tex]

=> r = 3 inches

Therefore, the radius of the hemisphere in inches is 3 inches.

Hope it helps :)

Please mark my answer as the brainliest

3 inches I really do hope that helps

How much fabric did Daria use to make this number cube?

Answers

It’s C

294cm(squared)

The Math Club at Dawn's school had a Math Carnival. At her booth, Dawn set up three scales with baseballs, tennis balls, and soccer balls, as shown in the picture above. Each soccer ball weighs 12 ounces.

Contestants tried to determine the weight of each kind of ball.

How much does each kind of ball weigh?

[Assume that all the soccer balls weigh the same, all the baseballs weigh the same, and all the tennis balls weigh the same.]
1.How does each ball weigh.
2.How much does each tennis ball weigh.
Answer those questions

Answers

Soccer ball- 12 oz
Baseball- 5 oz
Tennis ball- 2 oz
That should be the right answer
soccer ball 12 oz
baseball 5 oz
tennis ball 2oz

what angles are complementary to 3 ? select all that apply

Answers

Answer:

its angle 2

Step-by-step explanation: a complementary angle is a angle tat adds up to 90 degrees and 3 and 2 will add up to 90

it’s angle 2
jsjdjdjdndjkdksk

Which set of values make the inequality n > -5 true?

A: {-5, -5.5, -6}

B: {-5, -4.5, -3}

C: {-6, 0, 5}

D: {-6, -7, -8}

Answers

The answer would be D
The answer is D!!!
I think


Help please god bless you!!!!!

Answers

75 B because there’s a difference of 25 in each temperature interval
The answer is 175 :)

A bakery offers a sale price of $3.45 for 6 muffins. What is the price per dozen?

Answers

Answer:

6.90  for 12

Step-by-step explanation:

a dozen is 12 muffins so multiply by 2

3.45 for 6

2*3.45  for 2*6

6.90  for 12

Answer:

6.90

Step-by-step explanation:

3.45 by 6 = 0.575

multiply 0.575 by 12

which equals 6.90

Pls help me so I can pass my math if I don’t pass I’ll get left back

Answers

B i hope this helped and I hope you pass
The answer is B!
I hope this helps, if you have any questions plz contact me! Good luck!

PLEASE HELP. BRAINLEST IF CORRECT

Answers

Answer:

4/9

Step-by-step explanation:

What is x if x + 2y = 10 and y = 3?

Answers

Answer:

x=4

Step-by-step explanation:

Hopefully this will help you

x + 2(3) = 10 , x + 6 = 10, x = 4

Please answer correct

Answers

Answer:

104280

Step-by-step explanation:

(22×78×70×) - (22×20×36)

104280

I hope that is correct

Answer:

I'm pretty sure the answer is 4740. (Sorry if im wrong)

Step-by-step explanation:

A circus has 15 performers, of which 6 are magicians.

What is the probability that a randomly selected performer will be a magician?

Write your answer as a fraction or whole number.

P(magician) =

Answers

Answer:

6/15

Step-by-step explanation:

Answer:

6/15 which is equal to 2/5 when simplified

Step-by-step explanation:

hope this helps :)

4.Find the solution mentally.
a. 3 x -4 = a
b. b x (-3) = -12
c. -12 x c = 12
d. d x 24 = -12

Answers

Answer:

3×-4=a

a=-12

b×(-3)= -12

-3b= -12

b=-12

-12c=12

c=-1

d×24= -12

24d= -12

d= -1/2 or -0.5

3*-4=-12
4*-3=-12
-12*-1=12

Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.

Solve the following equation.
-5 = s- 3

Answers

Answer:

s=-2

Step-by-step explanation:

-5=s-3

+3 +3

-2=s

Hope this helps! :)

Answer:

-2

Step-by-step explanation: I think of it like regular subtraction, you go backwards by 3 to get -5.

what is 6x1/2
a. 7/2
b. 7/8
c. 6/12
d. 6/2

Answers

The answer is 3. Is that 1 and half or no ?
6/2. It’s 6 divided by 2 which is 3. 3 is equal to 6/2

I need some help guys

Answers

Answer:752+136=888

Step-by-step explanation:

Answer:

752+136=888

Step-by-step explanation:

Using the tip, (4+5=9 is equal to 5+4=9), just switch the two numbers that add up to 888. So instead of 136+752=888, do 752+136=888 because both of those add up to the same number.

Hope this helps :)

What is the mean average of hours completing homework each week based on the table below:
Number of hours each week
completing homework | 1 | 2 | 3 | 4 | 5
# of students | 6 | 20 | 15 | 12 | 7

Answers

Answer:

12

Step-by-step explanation:

Add 6+20+15+12+7 and you get 60 then by divide by 5 and you get 12 that is your answer.

The answer to your question is “the mean is 12.”

Which set of coordinates satises the system of equations y = x − 3 and y = -2x + 1? A. A B. B C. C D. D

Answers

Answer:

a. your welcome I hope your day goes wonderfully

It’s A hope it helps you!!

What is the area of this triangle

Answers

Answer:

266

Step-by-step explanation:

Answer:

A = 1/2bh

= 1/2 x 10 x 24

= 120

Look at the pic below for the question please help!!

Answers

answer:

(bh) (hb)

explanation: this is because to be able to find the area of the triangle, you need to know at least the length of two sides and these are the formulas that you could use to get the area

Bh
HB
I think this is the answer

Someone Helppppp how do u do thisss

Answers

It will be 7 if I am right
The number without the variable (the letter x) is referred to as the y intercept. Therefore, it refers to the point along the y axis (up and down). For instance, in the first problem, the y intercept is -3. You would then go down 3 spaces and draw in the point.

The slope always has the x variable next to it. For instance, the slope of the first question is (positive) 2. To graph that, you would go up 2, and to the right one. Then you would repeat.

HELP I REA;LLY WANNA GO TO BED Which side lengths form a right triangle?

Answers

the answer is B.


(the equation to solve this with is: a^2 + b^2 = c^2)
B because I did it and got it right
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