Mathematics Middle School

Write an algebraic expression with the variable x that has a value of 3 when evaluated

Answers

Answer 1
x•1=3
x=3 bc 3•1=3.......
Answer 2

The required expression is  x + 2y = 2 (3/2 + y) that gives the value 3.

What is an algebraic expression?

An algebraic expression is consists of variables, numbers with various mathematical operations,

To write the algebraic expression with variable x that has a value of 3.

Let x is a variable and y is another variable,

The expression for the x equal to 3 can be written as,

x + 2y = 2 (3/2 + y)

The expression x + 2y = 2 (3/2 + y) gives the value 3.

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Related Questions

if a fish swims 7/8 of the depth of 32 foot deep lake, how many feet down did the fish swim?

Answers

the answer is 8÷32 4 4×7 28

You can measure length with the greatest precision using a tape measure marked in _____. A. meters B. kilometers C. millimeters D. centimeters

Answers

Millimeters because you can get measurements to the smallest unit there which is millimeters.

solve each equation 2n-5=21

Answers

2n-5=21
add 5 to both sides
2n=26
divide both sides by 2
n=13

I hope I helped! :)

Four friends at a party popped 3/4 of a bag of popcorn. They ate half of what was popped what fraction of the popcorn bag did they eat

Answers

 the answer to your question is 1/2
The answer to your question is 1/4 because you want to subtract 1/2 from 3/4 because they ate 1/2 from a 3/4 bag. 

Lee has a jar of 100 pennies. She adds groups of 10 pennies to the jar. She adds 5 groups. What numbers does she say?

Answers

100, 110, 120, 130, 140, 150. If counting by tens
If Lee starts with 100 pennies and adds groups of 10, the operation is addition. Since she does this 5 times, there is 5 different numbers Lee said.

100 + 10 = 110
110 + 10 = 120
120 + 10 = 130
130 + 10 = 140
140 + 10 = 150

Thus, all of the numbers she said were 110, 120, 130, 140, and 150.


Hope this helps! :)

Which of the following best defines 3 to the power of 2 over 3?

Square root of 9
Cube root of 9
Cube root of 3
Square root of 3

Answers

If the question is 3^(2/3), The answer is the cube root of 9.

Answer:

The cube root of 9

Step-by-step explanation:


Whats not an example of square root

Answers

Something that is not an example of square root is 12.
11 would be an example 

The greatest common factor of 24 and 36 is the least common multiple of a pair of numbers. Which two numbers could they be?

Answers

12 and 8 I think because 12×2 is 24 and 8×4 is 36

Cual es el resultado de la suma de polínomios (5a + a2 - 14) (10a + a2 + 39)

Answers

c  
(5a + a2 - 14) + (10a + a2 + 39) 

5a + 10a = 15a 

a2 + a2 = 2a2 

-14 + 39 = 25  
 
15a + 2a2 + 25 


Joseph used the problem-solving strategy Work Backward to solve the inequality 2n+5<13. Shawnee solved the inequality using the algebraic method. Compare the two methods

Answers

dunno what the work backward way is
seeems hard
maybe it's trial and error?

anyway

algebreaic

2n+5<13
minus  5 both sides
2n<8
divide by 2
n<4

Answer:

1. Using Backwards Method, we get,

We have the inequality 2n+5<13.

So, we subtract both the sides by 5,

i.e. 2n+5-5<13-5

i.e. 2n < 8

Now, divide both sides by 2, we get,

[tex]\frac{2n}{2} <\frac{8}{2}[/tex]

i.e. n < 4.

So, using the Backwards method, we get the solution is n<4.

2. Now, we use the Algebraic method,

We have, 2n+5<13

Take 5 to the right side of the inequality,

i.e. 2n<13-5

i.e. 2n < 8

Now, take the 2 on the right side of the inequality.

i.e. [tex]n<\frac{8}{2}[/tex]

i.e. n < 4.

So, again using the Algebraic Method, we get that the solution is n<4.

what is the estimation of 186.9

Answers

Because there is a nine you round up so its 187
190? or 187. im not sure which one. Does it ask you to round to the nearest tenths place or hundredth?

In the function y = 10.00x + 35, y represents the cost of cabin lodging per occupant and x represents the number of occupants. How much does the cost increase for every occupant?

Answers

y = 10x + 35

if y is cost per occupant and x is occupants, then we can read the equation as such:

Cost is equal to 10 times number of occupants plus a 35$ fee

10 times the number of occupants is the part we are worried about

The cost increases by 10$ for every occupant


Answer:

$10.

Step-by-step explanation:

We have been given a function [tex]y=10.00x+35[/tex], where  y represents the cost of cabin lodging per occupant and x represents the number of occupants.

Since slope of a line is also known as unit rate, so the cost increase for every occupant will be equal to the slope of line.

We can see from our given expression that 10.00x represents the slope of line, so the cost increase for every occupant is $10.


What is the volume of the box pictured below?


A 8/9 cubic foot
B 9/10 cubic foot
C 1 1/15 cubic feet
D 1/3 cubic feet

Answers

   
[tex]\displaystyle \\ V = \frac{2}{3} \times \frac{5}{6}\times 1\frac{3}{5}= \\ \\ =\frac{2}{3} \times \frac{5}{6}\times \frac{1\times 5+3}{5}= \\ \\ =\frac{2}{3} \times \frac{5}{6}\times \frac{8}{5}= \\ \\ =\frac{2 \times 5 \times 8}{3 \times 6 \times 5} =\frac{2 \times 8}{3 \times 6 } =\frac{ 8}{3 \times 3 } =\boxed{\frac{ 8}{9 } ~\text{foot}^3}[/tex]



Kelly Ann took 15 minutes to walk from her home to the library. Her average speed was 3 miles in 45 minutes. how far was it from Kelly Ann's house to the library? (PLEASE SHOW STEPS!!)

Answers

Ok; Since we know that in 45 min, she can walk 3 miles, we can divide it to see how many minutes it takes for her to walk 1 mile. 45 divided by 3 is 15. Which means it takes her 15 minutes to walk 1 mile. If we look back at the beginning, it says she takes 15 minutes. Now that we know that it takes her 15 minutes to walk 1 mile, the answer is that it takes her 1 mile to walk to the library.
Really simple.

You know that speed is v = d/t
so 3/45 = 1/15  or 1 mile per 15 mins

So since she took 15 mins i know the library is 1 mile

what does a and b equal in this equation.
a − 3b = 16

Answers

a = 3b + 16
b = 3a - 48
a − 3b = 16
a = 3b + 16
and 
3b = a - 16
b = a/3 - 16/3

24/4 = ?/1. 40/5 = ?/1

Answers

Answer for #1 is 6/1 and #2 is 8/1
1.) 6
2.) 8

No problem :D

Mary having her living room and bedroom painted. Interior Designs USA charges $60.00 to evaluate the space plus $35.00 per hour of labor. Splash of Color charges $55.00 per hour with no initial fee. Which of the following are true? Select all that apply.

Answers

The true statement are as follows:

If it takes more than 5 hours to paint the rooms, Splash of Color will be more cost effective.If it takes 3 hours to paint the rooms, both companies will charge the same amount.

Here's a breakdown of why each statement is true or false:

True:

If it takes more than 5 hours to paint the rooms, Splash of Color will be more cost effective. As the painting time increases, the hourly rate becomes a bigger factor, and Splash of Color's lower rate outweighs Interior Designs USA's initial fee advantage.

If it takes 3 hours to paint the rooms, both companies will charge the same amount. Both companies will charge 3 hours of labor at their respective rates: $35/hour * 3 = $105 for Interior Designs USA and $55/hour * 3 = $165 for Splash of Color.

False:

If it takes 7 hours to paint the two rooms, Interior Designs USA will charge the least. Interior Designs USA will cost $60 + $35/hour * 7 = $315, while Splash of Color will cost $55/hour * 7 = $385.

Splash of Color will always charge the least. This is not true because Interior Designs USA can be cheaper for smaller jobs due to their lack of an initial fee (e.g., 1 hour painting time).

If it takes 10 hours to paint the rooms, Splash of Color will charge $200 more than Interior Designs USA. Splash of Color will cost $55/hour * 10 = $550, while Interior Designs USA will cost $60 + $35/hour * 10 = $410. The difference is actually $140, not $200.

Complete question:

Mary having her living room and bedroom painted. Interior Designs USA charges $60.00 to evaluate the space plus $35.00 per hour of labor. Splash of Color charges $55.00 per hour with no initial fee. Which of the following are true? Select all that apply.

If it takes 7 hours to paint the two rooms, Interior Designs USA will charge the least.Splash of Color will always charge the least.If it takes more than 5 hours to paint the rooms, Splash of Color will be more cost effective.If it takes 10 hours to paint the rooms, Splash of Color will charge $200 more than Interior Designs USA.If it takes 3 hours to paint the rooms, both companies will charge the same amount.

I don't get how to do this. Please Explain step-by-step please.

(-8x³y²)² × 2x²y⁶
--------------------------
32x⁸y³

Answers

Hi I try best to work out this and explaining step by step to you I think you should understand this work out if you has that topic at school. Good luck Ask me if you have any questions to this part od topic Have fun

A Class 2 truck weighs between 6,000 and 10,000 pounds. What is the weight range in tons?

Answers

The answer is: The truck's weight range in tons would be 3-5.

To convert from pounds to tons, divide the number of pounds by 2,000. A Class 2 truck, which weighs between 6,000 and 10,000 pounds, would weigh between 3 and 5 tons.

To convert the weight range of a Class 2 truck from pounds to tons, we must know the unit equivalence that 2,000 pounds is equal to 1 ton. Since we're converting from a smaller unit (pounds) to a larger unit (tons), we need to divide.

The lower end of the range:

6,000 pounds / 2,000 pounds per ton = 3 tons

The upper end of the range:

10,000 pounds / 2,000 pounds per ton = 5 tons

Therefore, a Class 2 truck weighs between 3 and 5 tons.

ANSWER FAST! I WILL GIVE BRAINLIEST TO THE BEST AND CORRECT ANSWER!
The double number line below shows the approximate number of kilograms in a certain number of pounds:

Based on the number line, about how many kilograms are there in 17 pounds? Explain.

Answers

Answer:

7.7

Step-by-step explanation:

Its 7.7 kilograms

There are 46 legs in a zoo exhibit. The number of 2 legged animals is 2 more then the number of 4 legged animals. How many of each is in the exhibit?

Answers

7 four legged animals 9 two legged animals

A small business earns a profit of $6500 in January and $17,500 in May. What is the rate of change in profit for this time period?

Answers

The formula is New÷Old -1. So it would be 6500 (new) ÷ 17,500 (old) - 1. 6500 ÷ 17,500 = 0.371428...,Then you would subtract one from it = -0.628571.. After that, you would move the decimal 2 times =62.8571. Finally you would round it. The answer would be 62.9%! Hoped this helped you!
 i think yiu should add those to numbers together and there is your answer  

I need help on more Pythagorean Theorem word problems, please.

Answers

to solve 47, you would add.

a² (33) + b²(44) = c²

33² = 1,089
44²= 1,936.

1,089 + 1,926= 3,024.

√3,024= 54.9

to solve 48, you would subtract.

9² - 5.4² =x²

9² = 81.
5.4²= 291,16.

81 - 29.16= 51.84.

√51.84=7.2
7.2 = x

hopefully this helps







Geneva wants to put fencing around her rectangular flower bed. The width of her flower bed is the length. The perimeter of the flower bed is 20 feet.
What are the dimensions of her flower bed?
A. length = 7 feet; width = 3 feet
B. length = 6 feet; width = 4 feet
C. length = 3 feet; width = 7 feet
D. length = 4 feet; width = 6 feet

Answers

I think the length would be 6 feet and the width would be 4 feet 

What are the x-intercept and the y-intercept of the graph of y=14x+8 ? Enter your answers in the boxes. x-intercept: y-intercept:

Answers

6 - y intercept and 8 is the x intercept i believe

Round 35,894 to the greatest place

Answers

i hope this helps you




35,894 nearest 36
The correct answer is 40,000. Hope this helps.

How do you multiply 62.19 times 32.5?

Answers

by multiplying but without the decimal and when you have the answer you count how many numbers and behind the decimal  and put it in the answer

what is the value of the expression 8^-2

Answers

It would be 64 if the -2 is an exponent.
The answer is 0.015625. I know that's long, but it's because when you have a negative exponent, you put the number below 1? So in 8^2 you're doing 8^2/1, which is the same thing, but in 8^-2, you're doing 1/8^2. This is 1/64, which is equivalent to 0.015625. I know it's pretty confusing but let me know if you still don't get it :)

What is the actual distance between Gendet and Montrose? (Pic included)

Answers

I don't understand. What is Gendet. Please comment to my answer.

Answer:

The actual distance is 24 kilometers.

Step-by-step explanation:

The picture that shows the needed information is attached.

According to the graph, the distance showed between Gendet and Montrose is 1.5cm with a scale of 1 centimeter = 16 kilometers.

This scale means that each centimeter on the paper represents 16 kilometers of the real distance. So, what we need to do is just multiply the 1.5 cm by 16 km, because that's the scale:

[tex]1.5(16)=24[/tex]

Therefore, the actual distance is 24 kilometers.

An alloy consists of nickel, zinc, and copper in the ratio 2:7:9. How much of each metal is needed to make 3.6 kg of this alloy?

Answers

Answer

Find out the how much of each metal is needed to make 3.6 kg of this alloy .

To proof

As given

An alloy consists of nickel, zinc, and copper in the ratio 2:7:9 .

This shows that an alloy contains 18 parts and assume one part of alloy be u .

Thus

An alloy consists of nickel = 2u

An alloy consists of zinc = 7u

An alloy consists of copper = 9u

As given

Total weight of alloy = 3.6 kg

Thus equation becomes

2u + 7u + 9u = 3.6

18u = 3.6

[tex]u = \frac{3.6}{18}[/tex]

u = 0.2 kg

An alloy consists of nickel = 2 × 0.2

                                           = 0.4 kg

An alloy consists of zinc = 7 × 0.2

                                        = 1.4 kg

An alloy consists of copper = 9 × 0.2

                                             = 1.8 kg

Hence proved

Final answer:

To make 3.6 kg of alloy in the given ratio, 400 grams of nickel, 1400 grams of zinc and 1800 grams of copper are required.

Explanation:

The question is asking how much of each metal, namely nickel, zinc, and copper, is needed to make 3.6 kg of an alloy with a ratio 2:7:9. To solve this, first, we have to understand that the ratio represents relative amounts of each metal, not their exact weights. The entire alloy is made up of 2 parts nickel, 7 parts zinc, and 9 parts copper - a total of 18 parts. We can find the weight equivalent to one part by dividing the total weight of the alloy - 3.6 kg or 3600 grams - by 18. This gives us 200 grams as the weight of one part. To find the weight of each metal needed, we multiply the weight of one part by the number of parts in the ratio: nickel is 2 * 200 = 400 grams, zinc is 7 * 200 = 1400 grams, and copper is 9 * 200 = 1800 grams.

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