MATHEMATICS MIDDLE SCHOOL

Three times a number, X, increased by four is equal to five times the number, x. Which equation can be used to solve for x3x+ 5x=4
3x4.5
3x4+5
3-4-5

Answers

Answer 1
Answer:

Answer:

Step-by-step explanation:

Three times a number x :  3x

Three times a number x increase by 4:  3x +4

Five  times the number x: 5x

5x = 3x +4

Subtract 3x from both the sides.

5x - 3x = 3x +4 - 3x

2x = 4

Divide both sides by 2

2x/2 = 4/2

x=2

The number is 2

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How can you use algebraic expressions to solve problems?

Answers

Final answer:

Algebraic expressions can be used to solve problems in mathematics by representing unknown quantities with variables, setting up equations based on given information, and using algebraic manipulation to find the values of the variables.

Explanation:

Algebraic expressions can be used to solve problems in mathematics by representing unknown quantities with variables, setting up equations based on given information, and using algebraic manipulation to find the values of the variables. Here is a step-by-step process to solve problems using algebraic expressions:

  1. Read the problem carefully and identify the quantities involved.
  2. Choose variables to represent the unknown quantities.
  3. Write down the information given in the problem as equations using the variables.
  4. Simplify and manipulate the equations using algebraic operations, such as addition, subtraction, multiplication, and division.
  5. Solve the equations to find the values of the variables.
  6. Check your solution by substituting the values back into the original equations.

Learn more about algebraic expressions here:

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Final answer:

Algebraic expressions can be used to solve problems by representing unknown quantities with variables and using equations to find their values. It is important to read the problem carefully, identify the unknowns, and set up equations to solve for the variables.

Explanation:

Algebraic expressions can be used to solve problems in mathematics by representing unknown quantities with variables and using equations to find the values of those variables. When faced with a problem, you can set up an algebraic equation using the given information and solve for the unknown variable. For example, if you are asked to find the value of a number when it is multiplied by 5 and added to 10, you can write the equation as 5x + 10 = unknown value, where x represents the unknown number. By solving this equation, you can determine the value of the unknown number.

When using algebraic expressions to solve problems, it is important to carefully read and understand the problem, identify the unknowns, and define variables to represent them. Once the unknowns are identified, you can use the given information to set up equations and solve for the variables. It is also important to check the solution to ensure that it makes sense in the context of the problem.

Learn more about Algebraic expressions here:

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Given the geometric sequence where a1 = 3 and r = √2 find a9

Answers

Answer:

a_9=48

Step-by-step explanation:

we are given

sequence is geometric

so, we can use nth term formula

a_n=a_1(r)^(n-1)

we have

a_1=3

r=√(2)

we have to find a9

so, we can plug n=9

we get

a_9=3(√(2))^(9-1)

a_9=2^4\cdot \:3

a_9=48

Answer:

the answer to this geometric sequence is 48.

Jason owes $15 for last month's gas bill also. The total amount of the two gas bills is split evenly among the 4 roommates (Gas-$14)

Answers

Divide the money jason owes by 4 roomates.That should help u get ur answer.

What is the HCF of 14 and 21?

Answers

The highest common factor is seven
The factors of 14 are:
1, 2, 7, 14

The factors of 21 are:
1, 3, 7, 21

The common factors are:
1, 7

The Greatest/highest Common Factor:
HCF = 7

Gabriel is at the grocery store, and wants to figure out his total cost before he gets to the register. He bought 2.5 pounds of apples that are x dollars a pound and 2 bags of lettuce for y dollars each. Which expressions would represent his total cost? Check all that apply.

Answers

The expression that'll be used in calculating the total cost will be 2.5x + 2y.

Since Gabriel bought 2.5 pounds of apples that are x dollars a pound and 2 bags of lettuce for y dollars each, then the total cost will be:

= (2.5 × x) + (2 × y)

= 2.5x + 2y

Based on the calculation above, the expression that'll be used in calculating the total cost will be 2.5x + 2y.

Read related link on:

brainly.com/question/24429956

Answer:

x + 1.5 + 2y and 2y + 2.5x

Explanation:

Those were the correct answers for me.

1. what is the process in which cells obtain energy without using oxygen???2. how would athletes be affected if this process could not take place???
3. Is this process more likely to occur during a short run or a long walk? Explain your answer???
40 points
help pls?

Answers

1. Fermentation. 2. they would die as they wouldn't get energy. 3. short run because frementation occurs only when we r tired and we will be tired as we run it can be either long or short run.


i hope u understand plz inform me
1. Fermination is the process in which cells obtain energy without using oxygen
2.  Cells use oxygen faster than it can be replaced so that means that the body wouldn't be able to get the oxygen that is needed throughout the body which leads to the athletes performing poorly.
3. This process will more likely to occur in a short run because your body needs a lot more energy in a short run than in a long walk. The more energy the body need, the more oxygen will be used.
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