Mathematics Middle School

Mandy works construction. She has a 5-meter long metal bar that weighs 40 kg. What is the weight of the metal bar that is 3 meters long?

Please show your work if you can!

Answers

Answer 1

Answer:

24 kg

Step-by-step explanation:

Simple!

Divide 40kg by 5 meters to get 8kg/m

Then plug this into the equation 3m=?kg to get 24kg.

Answer 2
It should be 24 because 5:40 have the same ratio as 3:24

Related Questions

In Harold’s class, there are 7 boys for every 6 girls. Identify three equivalent ratios to compare boys to girls.

Answers

Answer: The ratio of 6 /7 represent the number of boys to the number of girls in one classroom. You are given a total number of boys and girls.  

 

So, your ratio has to represent how many boys to the total number of boys and girls in one classroom, or 13.

 

The proportion becomes, 6 / 13 = x / 78.

 

Cross multiply getting, 13 * x = 6 * 78

 

Divide by 13 to solve for x, or x = 36.

 

There are 36 boys in all of the classrooms and 42 girls in all of the classrooms.

 

The ratio of boys to girls in all of the classrooms is 36 / 42, or 6 / 7.

Answer:

7:6

14:12

21:18

Step-by-step explanation:

7:6

14:12

21: 18

ANSWER THIS QUESTION FOR BRAINLEST AND 10 POINTS

Answers

Answer:

I beleive that the answer is (1,2)

Step-by-step explanation:

You’ll land at (1,2)

Helppppppppppppppppppppppppppp me plz

Answers

6. 4x
7. 3y
8. 1/2 x (2y-9)
9. 7/2x + 2

Answer:

6. 4x

7. 3y

8. y - 4.5

9. 7/2x + 2

Step-by-step explanation:

6.

x + x + x + x

Combine like terms by adding

4x

7.

4y - y

Combine like terms by subtracting

3y

8.

7y - 4.5 - 6y

Combine like terms by subtracting

1y - 4.5

y - 4.5

4.5 does not have the same variable as the other term in the expression, therefore we cannot do anything further to it

9.

4x + 2 - 1/2x

Combine like terms by subtracting

One like term is a fraction so we must convert the whole number into a fraction with the same denominator

4/1x = ?/2

Cross multiply

4 × 2 = 1x × ?

8 = 2x

This is our new fraction: 8/2x because 4x = 8/2x

Substitute this new fraction into the expression

8/2x + 2 - 1/2x

Combine like terms by subtracting the numerators

7/2x + 2

Neither are like terms so they cannot be added together

SOMEONE PLS HELPPPPPPPPPP

Answers

Answer:

Step-by-step explanation:

the side length is 10

the angle measure is 53

Answer:

the side length is 10

the angle measure is 53

Step-by-step explanation:

Last year, a small manufacturing company netted a profit of $540,000. The net profit increased this year by 135%. What is the net profit of the company this year?

*PLEASE SHOW YOUR WORK

Answers

940,000 is your answer
You have to divide 135 from 540,000 and then multiply 100. Which is 400,000.
540,000+400,000=940,000.
If it’s not that, I’m sorry

540,000/135
=4000
4000•100
=400000


You must reverse the inequality sign when solving this inequality: x/4 < -12.

True
False

Answers

True, because you are multiplying or dividing
true because what person said above me

please help me on this for brainliest

Answers

Answer:

d

Step-by-step explanation:

Answer:

The answer is D.

Josh ran 14.8 km in the morning. After lunch, he continued running. When he finished the run, he had covered 31.1 km in all. Write an equation that can be used to find how far Josh ran after lunch.

Answers

14.8 + x =31.1
X equals how much he ran after lunch

Answer:

14.8 + x = 31.1

Step-by-step explanation:

This is the best equation to put as the answer.

If you want to solve it, this is how you would solve it.

14.8 + x = 31.1

Make it so that the variable x is by it's self.

14.8 + x - 14.8 = 31.1 - 14.8

x = 31.1 - 14.8

Now solve the subtraction problem.

x = 31.1 - 14.8 = 16.3

So, now you have your answer

x = 16.3

To make sure it's correct, use the addition method.

16.3 + 14.8 = 31.1

-6/11 multiplied by (-1/6) in fraction form

Answers

Answer:

1/11

Step-by-step explanation:

Answer:

1/11

Step-by-step explanation:

Mylen is placing a fence around a circular garden with a 20-foot diameter. How many feet of fencing will Mylen need to buy to enclose the garden? Use 3.14 for pi. Round the answer to the nearest foot.


a 314 ft

b 63 ft

c 1256 ft

d 31 ft

Answers

Answer:

63ft

Step-by-step explanation:

Circumference (C) = 2pi x r

radius (r) = diameter/2

r = 10ft

C = 2(3.14)(10)

C = 62.8ft or 63ft

62.8 or 63 if you round up ig

ANSWER THIS QUESTION FOR 10 POINTS AND BRAINLEST

Answers

Answer:

ABC

Step-by-step explanation:

the answer is going to be ABC

Fill in the blank with the correct number. A number is divisible by ________ if the last two digits form a number divisible by four. A. 3 B. 4 C. 6 D. Both 3 and 4 plz hury i am on a test

Answers

Answer:

4 is the correct option you can write it

B.4 I believe that’s the answer

Can someone plz help me with this one problem!!!

Answers

Answer:

13

Step-by-step explanation:

Each time it adds the two numbers behind it, so 5 + 8 = 13.

Answer:

11

Step-by-step explanation:

i say 11 bc 5+3 = 8 and 8+3=11 so..... im very sorry if my answer is wrong

Which situation can be represented by y = 20x?

Prairie City had y inches of rain over 20 plus x days.

A bakery makes y pies from 20 pounds of apples sold for x dollars.

Juan is 20 years old. This is y years older than who is brother who is x years old.

Susie makes 20 blankets each month. This means she makes y blankets in x months.

Answers

Answer:

A bakery makes y pies from 20 pounds of apples sold for x dollars.

Step-by-step explanation:

Does anybody know the answer for this??

Answers

Answer:

B

Step-by-step explanation:

cause theres less orange marbles.

Answer:

9/16 is your answer

Please help me I just need the ticket price.

Answers

$167.... That an expensive tickets

Can you help me please, I don't want to get this wrong.

Answers

Answer:

The answer is number 3 Because it is supposed to divide the number

The answer is number 3

PLZ HELP!!!!
Find the area of the shaded region. (Show work)

Answers

(X-2)(X+9)-(5X)= area.

The equation (X-2)(X+9) represents the area of the entire rectangle including the clear and shaded region. That would be X^2+6X-18. Then find the area of the white/clear area, 5X, and subtract that from the equation.

That would make the answer X^2+X-18.

(P.S ^2 refers to the exponent 2)
Answer:
X^2+X-18??
Explanation:

PLEASE ANSWER QUICKLY (16 points)

(08.01 MC)


Two lines, A and B, are represented by equations given below:


Line A: y = x − 4

Line B: y = 3x + 4


Which of the following shows the solution to the system of equations and explains why?

Answers

Answer:

X=-4, y=-8

Step-by-step explanation:

x − 4 = 3x + 4

x - 4 - 3x = 3x - 3x + 4

-2x - 4 = 4

-2x - 4 + 4 = 4 + 4

-2x = 8

-2x/-2 = 8/-2

x = -4

then insert -4 for x then solve the equations.

Zach solves the system below and finds the solution (5, −6)

Answers

Answer:

The answer would be: (5, −6) = -1

Step-by-step explanation:

-1     <------- thats the answer :)

Add the two expressions. 3y + 5 and y + 24

Answers

Answer:

the answer is 32y

Step-by-step explanation:

3y + y = 4y
5 + 24 = 29
4y + 29

WILL MARK BRAINLIEST Which of the following represents members of the domain of the graphed function?

Answers

Answer:

D

Step-by-step explanation:

Ngl I was confused for a minute. But domain is asking for the x-values and range is asking for the y-values.

You can see the points on the graph are (-4,1), (-2,2), (0, 3), and (2,4).

Because it is asking for the domain, it is asking for the X VALUES of the points you have found above. So the answer is {-4, -2, 0, 2}

So none of those answers look quite right

The reason I picked D is because it is the only one that contains the x values we picked. The rest have numbers outside the domain, such as 3, 4, 5, etc.

The answers D [-4,0,1]

What is the slope of the line shown on the graph?

Answers

Answer:

slope is 1/3

Step-by-step explanation:

Find two points on the graph like (3,1) (6,2)

Then use the formula to find slope

y2-y1/x2-x1

Plug it in

2-1/6-3

1/3

Answer:

slope =1/3

Step-by-step explanation:

Please help me asap I will give you brainliest
Please don't do it just for the points and stuff :(
I need help again please I don't wanna fail.

Answers

Answer:

where the work ???? not for points

Where’s the problem?

A professional runner takes 3 strides between each pair of hurdles. The runner leaves the ground 2.2 meters before the hurdle and returns to the ground 1 meter after the hurdle.

About how long are each of the runner's strides between the hurdles?

Answers

Answer:

1

Step-by-step explanation:

Plsss provide Explanation to IF you can...very confused!!

Answers

Answer:

1 rotation/circumference = 879.2/10

87.9= 2x3.14xr

= 14

Step-by-step explanation:

brainliest would be appreciated

i’m pretty sure the answer is 14

Pls help it is due today

Answers

The correct answer is b or 8:2 and 4:1.


To compare ratios, you need to have a common second number. By multiplying each ratio by the second number of the other ratio, you can determine if they are equivalent. Multiply both numbers in the first ratio by the second number of the second ratio.
it’s the second one down 8:2 and 4:1

What is -3x-5 = 16
I'm stuck on a simple problem

Answers

Answer:

-7

Step-by-step explanation:

-3x-5=16

-3x-5+5=16+5

-3x=21

-3x/-3=21/-3

x=-7

Answer:

x=-7

Step-by-step explanation:

-3x-5=16

Add 5.

-3x=21

Divide by -3.

x=-7

Please Help!
Solve this system of equations

{ 1/2x+6y+2
y=x+15

Answers

I dont know of you wanted the graph too so here

everything is in the pictures here, also sorry if I am wrong

There is 1 of a chocolate bar that will be shared equally among 5 friends. 2
What fraction of the chocolate bar will each friend get? (2pt)
Answer: ​________________________ ​chocolate bar How many 1 cup servings are in 6 cups of cereal? (2pt)

Answer: ​________________________​cups

Answers

Answer:

1: 1/5 or 0.2 of the chocolate bar

2: 6

Step-by-step explanation:

|_|_|_|_|_|

1 2 3 4 5

and

6c (1

5c (2

4c (3

3c (4

2c (5

1c (6

For the first part, each friend will get 1/5 of a chocolate bar. And for the second part if it says how many 1 CUP servings are in 6 CUPS of cereal. Then the answer would be 6 cups!

Hope that helped! :D

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