MATHEMATICS MIDDLE SCHOOL

Roy and Sam start solving the equation as follows.Which student's work is correct so far and what property did he use?

A.
Sam's work is correct so far. He used the addition property of equality.
B.
Roy's work is correct so far. He used the addition property of equality.
C.
Sam's work is correct so far. He used the subtraction property of equality.
D.
Roy's work is correct so far. He used the subtraction property of equality.

Answers

Answer 1

Answer:

Answer:

The correct option is D.

Step-by-step explanation:

The given equation is

$-3x+4=5x-6$

According to the addition property of equality $a=b$ and $a+c=b+c$ are equivalent equations.

Use addition property of equality, add 3x on both the sides.

$-3x+4+3x=5x-6+3x$

$4=8x-6$

Therefore Sam's work is incorrect because he make calculation mistake.

According to the subtraction property of equality $a=b$ and $a-c=b-c$ are equivalent equations.

Use subtraction property of equality, subtract 5x from both the sides.

$-3x+4-5x=5x-6-5x$

$-8x+4=-6$

Therefore Roy's work is correct because he used subtraction property.

Option D is correct.

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Cedro collects state quarters. he has 42 out of 50 available quarters. what is 42 out of 50 as a percent

Answers

84%. You start out with 42/50. You need to then multiply the numerator and the denominator by 2 which will give you 84/100 which will then give you 84%.

$42 \ out \ of \ 50=(42)/(50)=(42 * 2)/(50 * 2)=(84)/(100)=\boxed{84\%}$

Answer the riddle I am a geometric solid I have two surfaces one of my surfaces is formed by a circle the other surface is curved what am I

Answers

I belive that it is a cone, because it has two surfaces, and matches the other clues as well :)

You are.... A cone,trapezoid, or cylinder

Hope this Helps!

A dog weighs 44 pounds and the veterinarian thinks it needs to lose 7 pounds. Mikala wrote the equation x + 7 = 44 to represent the situation. Kirk wrote the equation 44 - x = 7 which equation is correct? can you write another equation that represents the situation?

Answers

neither equation is correct. the correct equation would be 44 - 7 = x

They are both correct with x coming to be the same number in each equation, another way to write the equation may be 44 - 7 = x

Each 14 pound of potting soil contains 316 cups of water.How many cups of water are contained in 1 pound of potting soil?

34 cups
1116 cups
112 cups
113 cups

Answers

(4 * 3/6)= 12/16= 3/4 of a cup

Answer:

The first answer will be correct!

Step-by-step explanation:

3/4

Classify the number shown as the dot in this diagram.Whole, integer, rational, real

Irrational, real

Rational, real

Integer, rational, real

Answers

The number shown as the dot in the diagram, which is 0.37, can be classified as a rational number and a real number.

Whole Numbers: Whole numbers are non-negative integers, including zero. Since the number in the diagram is 0.37, it is not a whole number because it is less than 1.

Integers: Integers are a set of whole numbers and their negative counterparts. As the number in the diagram, 0.37, is not an integer, it does not belong to this category.

Rational Numbers: Rational numbers are those that can be expressed as a ratio of two integers (a/b), where 'a' is the numerator and 'b' is the non-zero denominator. The number 0.37 can be expressed as 37/100, which is a ratio of two integers. Hence, it is a rational number.

Real Numbers: Real numbers include all rational and irrational numbers. The number 0.37 is a real number as it falls under the category of rational numbers, and all rational numbers are real numbers.

Hence the correct option is (c).

To know more about numbers here

brainly.com/question/24908711

#SPJ2

Answer:

Integer, rational,real

A study involving teenage golfers was conducted to determine the imapact practice time has on golf scores in a tournament. What is the dependent variable?A. golf scores in the tournament
B. practice time
C. age of golfers
D. difficulty of the golf course

Answers

Remember that the dependent variables'(often referred to as y) value is based off of the independent variable, which can change around on its own and directly change the dependent variable.

With that being said, the answer is A:

Golf scores in the tournament. This is because it depends on

practice time(the independent variable).

Good luck!

-RxL

A. Golf score in the tournament
Hope this helps :)