Mathematics Middle School

helpppp plzzzzzzzzz.....also give steps

Answers

Answer 1

This would be your answer

Related Questions

GIVING OUT BRAINLIEST / 70 POINTS TO ANSWER

Answers

Answer:

7a+b-9c+17d

Step-by-step explanation:

-5 ( a-2b+3c -4d) - (-3) (4a -3b+2c-d)

Distribute

-5a+10b-15c+20d+12a-9b+6c-3d

Combine like terms

7a+b-9c+17d

7a + b - 9c + 17d

step-by-step explanation

(- 5)( a - 2b +3c - 4d ) - (-3)( 4a - 3b+2c - d )

- 5( a - 2b + 3c - 4d ) - (-3)( 4a - 3b + 2c - d)

Using Distributive property

- 5a + 10b - 15c + 20d + 12 a - 9b + 6c - 3d

Arranging like terms together

- 5a + 12a + 10b - 9b -15c + 6c + 20d -3d

7a + b - 9c + 17d

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:

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.”

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.

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:

330

HR stands for hours

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

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

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 :)

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 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

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.

Find the difference. 7.6 - 5.88

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Answer:

1.72

Step-by-step explanation:

Would end up being the difference.

The difference is -1.72

Help please god bless you!!!!!

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75 B because there’s a difference of 25 in each temperature interval

The answer is 175 :)

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

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53 workers are needed

hmm….. 53 workers are needed.

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

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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!

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!!

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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

HELPPPPPP QUICKKKKKHELPPPPPP QUICKKKKKHELPPPPPP QUICKKKKK

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Answer:

Step-by-step explanation:

the answer is D. y=1/2x+1

write an addition or subtraction equation (your choice!) to describe the diagram.

Answers

Answer:

(-4)- (-9) = -13

Step-by-step explanation:

not sure if it's right so be ware

Answer:

0-4-9= -13

Step-by-step explanation:

Going back 4 spaces from 0 is -4 then after that going back 9 more spaces is an addition to -4 of -9. Which is -13.

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

HELPPPPPP QUICKKKKKHELPPPPPP QUICKKKKKHELPPPPPP QUICKKKKK

Answers

Answer:

Step-by-step explanation:

Follow thw line to the segment

Answer:

Step-by-step explanation:

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

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

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:

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

ABCDEFGH is a rectangular prism with CD=5, AD=6, and AE=8. Find the volume of tetrahedron ABCF.

Answers

Answer:

Step-by-step explanation:

the volume of tetrahedron ABCF =

⅓× ½×5×6×8 = 40

The volume of the given tetrahedron ABCF will be 40 cube units.

What is a tetrahedron?

A tetrahedron is a polyhedron having four faces, six edges, and four vertices, all of which are triangles. It is also known as a triangular pyramid with a triangle base.

The ABCDEFGH is a rectangular prism given in the question, which has :

CD = 5, AD = 6, and AE = 8

We have to determine the volume of tetrahedron ABCF.

As per the question, the required solution would be as:

The volume of tetrahedron ABCF = 1/3 × 1/2 × 5 × 6 × 8

Apply the multiplication operation, and we get

The volume of tetrahedron ABCF = 40 cube units

Thus, the volume of the given tetrahedron ABCF will be 40 cube units.

Learn more about the tetrahedron here:

https://brainly.com/question/17132878

#SPJ2

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)

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!!

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

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

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It’s C

294cm(squared)

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

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