Mathematics Middle School

## Answers

**Answer 1**

Answer: their product is always one

Step-by-step explanation:

**Answer 2**

Answer:

B. Their product is always one.

Step-by-step explanation:

got it right

## Related Questions

Graph on a coordinate plane each set of (x, y) values. Which set of values describes two quantities that are in a proportional relationship? A)(2, 7)(0, 2)(3, 9) B)(1, 5)(2, 7)(3, 9) C)(4, 9)(2, 4.5)(0, 0) D)(1, 3.5)(0, 1)(2, 6)

### Answers

Answer:

C

Step-by-step explanation:

4 : 9

2 : 4.5

y = kx

y = 2.25x

Answer:

C because its the only answer that has the origin (0,0)

Step-by-step explanation:

(I NEED THIS ANSWERED QUICKLY! I WILL GIVE BRAINLIEST TO FIRST CORRECT ANSWER!) A pole is made to lean against a wall. The base of the pole is placed 4 feet away from the wall. The top of the pole reaches 15 feet up the wall. How long is the pole?

A.√ 153 ft.

B.√ 241 ft.

C. √ 161 ft.

D.√ 245 ft.

### Answers

Step-by-step explanation:

Here, pole is making a right triangle with the wall and pole is acting as hypotenuse. Thus by using Pythagoras theorem the length of pole can be calculated as:

Hence, option B is the correct answer.

Answer:

B

Step-by-step explanation:

i did the test

Amy is thinking of a number that is 2 times the value of jake's number.Amys number is also 2 more than 3 times the value of jake's number.What is amys number? Write and solve a system of equations to answer the question. A.4

B.2

C-2

D.-4

### Answers

By solving a system of equations, we will see that Amy's number is -4.

How to find the system of equations?

First, we define the variables:

- A = Amy's number.
- J = Jake's number.

From the text, we know that:

A = 2*J

A = 2 + 3*J

This is the system of equations we need to solve.

To do it, we can write:

2*J = 2 + 3*J

Now we solve this for J

-2 = 3*J - 2*J = J

Then Jake's number is -2

And Amy's number is:

A = 2*J = 2*(-2) = -4

If you want to learn more about systems of equations:

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Answer:

D

Step-by-step explanation:

Amy's number: a

Jake's number: j

a = 2j

a = 2 + 3j

2j = 2 + 3j

j = -2

a = 2j = 2(-2) = -4

8x2 + 96x + 288

i really need help thanks

### Answers

Answer:

8x² + 96x + 288 = 8(x + 6)²

Step-by-step explanation:

96÷8=12

288÷8=36

8x² + 96x + 288 = 8(x² + 12x + 36)

= 8(x² + 2(1)(6)x + 6²)

= 8(x + 6)²

What is the diameter of the circle that has a radius of 6

### Answers

Answer:

d=12

Step-by-step explanation:

Answer:

12 units

Step-by-step explanation:

The radius is half of the diameter, so we need to double 6 to get 12.

Write this ratio as a fraction in lowest terms. $30 to $80 is

### Answers

Answer:

⅜

Step-by-step explanation:

30/80

= 3/8

Answer:

60

8

reduced by taking a zero off of each one

6

= 4/3 reduced by dividing each one by 2

Step-by-step explanation:

(I NEED THIS ANSWERED QUICKLY! I WILL GIVE BRAINLIEST TO FIRST CORRECT ANSWER!) The older square-shaped floppy diskettes measured 5 inches on each side. What was the diagonal length of a diskette?

A. √50 in.

B. √55 in.

C. √ 51 in.

D. √ 58 in.

### Answers

Answer:

The diagonal length of a diskette is

Step-by-step explanation:

Given:

sides = 5 inches

To Find:

diagonal length of a diskette = ?

Solution:

The diskette is in the shape of square

So the diagonal of square =

where s is the side of the square

On substituting the square value

The diagonal of diskette =

The diagonal of diskette =

The diagonal of diskette =

Solve x2 = 39.

A)x = ±39

B)x = ±

39

C)x = ±3

13

D)x = ±13

3

### Answers

Step-by-step explanation:

The table shows the number of degrees the temperature increased or decreased over four days. Day

Tuesday

Wednesday

Thursday

Friday

Temperature

Temperature Change

-9

+6°

+10°

-12°

On which day did the temperature change have the greatest magnitude?

Tuesday

Wednesday

Thursday

Friday

### Answers

The temperature change is maximum on Thursday.

What is temperature?

- Temperature is a physical quantity that expresses quantitatively the perceptions of hotness and coldness.
- Temperature is measured with a thermometer.
- Temperature is the measure of average kinetic energy of a system.

Given is that the table shows the number of degrees the temperature increased or decreased over four days.

The temperature change is maximum on Thursday and is equivalent to + 10°.

Therefore, the temperature change is maximum on Thursday.

To solve more questions on numbers, visit the link below -

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Answer:

friday

Step-by-step explanation:

A group of students went out for lunch after their examination. They were to

share the expenses equally. The total bill

was R200. Ten of the students did not

have any money, so each of the others

had to pay an extra R1. Determine the

number of students in the group.

### Answers

number sof student of the group is 50

Step-by-step explanation:

let the number students be x

total bill is Rs 200

each student will pay =200/x

now 10 students do not have the money

so x - 10 students will pay the bill of Rs 200

according to the problem

= + 1

or, - = 1

or, 200 ( - ) = 1

or, 200() = 1

or, 200 X 10 = x(x-10)

or, - 10x - 2000 = 0

or, - 50x +40x - 2000 =0( using middle term factor)

or, (x - 50) (x+40) = 0

x = 50 ( x = -40 for number of students it is not possible)

(I NEED THIS ANSWERED QUICKLY! I WILL GIVE BRAINLIEST TO FIRST CORRECT ANSWER!) An airplane is flying at a height of 3.7 kilometers on a path that will take it directly over the airport. At a certain instant its slant distance from the airport is 14.2 kilometers. How far must the plane travel to be directly above the airport?

A.√187.95

B.√189.95

C.√188.95

D.√185.95

### Answers

Answer:

Option A

Step-by-step explanation:

we know that

Applying the Pythagorean Theorem

where

c is the greater side (the hypotenuse)

a and b are the legs

we have

----> the height of the airplane

---> slant distance from the airport

substitute

solve for b

Answer:

a

Step-by-step explanation:

Meg has 2 berries, Paul has 2 berries, Mia has 5, Yen has 7, and April has 9. If they all put their berries

together and then divide them up equally, how many

will each one of them have?

There are a total of __strawberries.

There are a total of __people.

The expression to find the mean, or balance point, is__

After redistributing, each person will have__

berries.

### Answers

A mean is an arithmetic average of a set of observations. The number of berries with each person will be 5.

What is Mean?

A mean is an arithmetic average of a set of observations. it is given by the formula,

As it is given that Meg has 2 berries, Paul has 2 berries, Mia has 5, Yen

has 7, and April has 9. Therefore, the total number of berries with them will be,

As the total number of berries is 25, while the total number of people is 5, therefore, the number of berries with each person after distribution will be,

Thus, the number of berries with each person will be 5.

Learn more about Mean:

brainly.com/question/16967035

2+2+5+7+9=25

25 total berries

5 people

25/5

Each of them will have 5 berries

ABCD is a rectangle. The length of is 8 units, and m∠ABD is 67°. The length of is

units, and m∠CBD is

°.

### Answers

the required answer is 23°

Step-by-step explanation:

you can apply basic property of rectangle to solve this question.

each angle of a rectangle is 90°

now, ∠ABD + ∠CBD = 90°

or, ∠CBD = 90° - 67° ( given ∠ABD = 67°)

= 23°

Answer:

The length of AC is 8 and the length of CBD is 23

Step-by-step explanation:

AC is equal to BD and ABD has an angle of 67, and since it is a rectangle all angles are 90 degrees so 90-67=23 which gives you the angle for CBD

HELLLLPPPP! brainliest!!!

f = 180° – 50° – =?

### Answers

Step-by-step explanation:

Answer: 356°F (Fahrenheit)

Step-by-step explanation:

Amir and Edward are twins, They want to invite their friends to celebrate birthday party at a bowling alley. They have a budget of $200 to plan their party. The party room at the bowling alley costs $55.99 to rent and includes a free birthday cake. The bowling alley charges each person $5.50 to bowl and pair of bowling shoes. Amir writes an equation that represents the cost of their birthday party, Edward writes an inequality. Both use p to represent the number of people that can attend. A. Write an equation Amir used and an inequality Edward used to represent the cost of their birthday party. Each brother believes that their statement best represents the situation. Amir thinks that his equation is the best representation for the situation. Edward argues that his inequality is the best representation for the situation. B. Which brother's statement best represents the situation? Explain.

### Answers

Answer:

A.

Amir's equation : 5.50 p + 55.99 =200

Edward's equation : 5.50 p+ 55.99 ≤ 200

B. Amir's equation presents the situation best because it gives the cost of the part as per the budget. Edward's equation gives room for lesser amounts to be used in case p< 26.

Step-by-step explanation:

The budget is $200

The party room charges $55.99

The charge per person is $5.50

Letting p =number of people that can attend the party, then

A.

Equation for cost that Amir use is;

$5.50*p + $55.99 = $200

5.50 p + 55.99 =200

5.50 p = 200-55.99

5.50 p =144.01

p= 144.01/5.50 = 26 -------Amir's equation will also give the number of people that can attend the party with the budget of $200

For Edward's case

$5.50 p +$55.99 ≤ $200

5.50 p+ 55.99 ≤ 200

5.50 p ≤ 200-55.99

5.50 p ≤ 144.01

p ≤ 144.01/5.50

p ≤ 26

Edward's inequality suggests that for the budget of $200 , 26 or less people can attend the party.

B. Amir's equation presents the situation best because it gives the cost of the part as per the budget. Edward's equation gives room for lesser amounts to be used in case p< 26.

Which shows the list of numbers in order from least to greatest?

-3, 3/2, -2, 3.5, -1

### Answers

Answer:

-3, -2, -1, 3/2, 3.5

Step-by-step explanation:

Hello!

I believe it is A.

Because the symbol "|number|" means that its basically shown as a positive number. (It's distance from zero.)

So, if we counted them all as positive numbers, -1 would be the least amount, after that 3/2, then -2, last -3.

To sum it up, again, your answer would be A.

Hope this helped you out!

A car brought for 13000 deprecitates at 15 percent per year find value of car after 5 years

### Answers

the value of the car will be 3250 after 5 years

Step-by-step explanation:

the value of the car = 13000

rate of interest = 15%

time = 5 years

in 5 years the car will depreciates = 13000 X 15% X 5

=

= 9750

after 5 years the value of the car is = 13000 - 9750 = 3250

Find the area of an equilateral triangle (regular 3-gon) with the given measurement. 9-inch perimeter (the answers something square rooted with a number on the outside too)

### Answers

The area of an equilateral triangle is

Step-by-step explanation:

- Perimeter of a triangle = 3a

⇒ 9 = 3a

⇒ a = 9/3

a = 3

- Area of an equilateral triangle =

⇒

⇒

⇒

What happens when you rotate a straight line 180 degrees?

### Answers

Answer:

Rotation of a point through 180°, about the origin when a point is rotated about the origin through 180° in anticlockwise or clockwise direction, it takes the new position

Step-by-step explanation:

What is the slope of the line passing through the points (4, 8) and (1, 6)? −32 −23 23 32

### Answers

Answer:

0.67

Step-by-step explanation:

Slope = change in y /change in x

That’s y2 - y1 /x2 - x1

From the question,

x1 = 4

y1 = 8

x2 = 1

y2 = 6

Therefore,

Slope = 6 -8 /1 - 4

= -2/-3

= 0.67

Answer:

2/3

Step-by-step explanation:

3.11 Quiz: Slope

## FAQs

### Which statement is true about a number and its multiplicative inverse? ›

Now, let's consider the product of a number and its multiplicative inverse: - **If we multiply a number by its reciprocal, we get 1**. For example, 2 x 1/2 = 1 and 5 x 1/5 = 1. This means that the product of a number and its multiplicative inverse is always equal to 1, so option B is the correct answer.

**Is multiplicative inverse of 0 is always 0 True or false? ›**

So, the multiplicative inverse of 0 **doesn't exist**.

**Is the product of a number and its multiplicative inverse is none? ›**

Hence , the product of a number and its multiplicative inverse is **1** .

**What is the product of a number and its multiplicative inverse always? ›**

Hence, the product of a fractional number and its multiplicative inverse is 1.

**What is the multiplicative inverse of zero? ›**

So, the multiplicative inverse of 0 **doesn't exist**.

**Does every number other than 0 have a multiplicative inverse? ›**

“**Every real number except zero has a multiplicative inverse**.” A multiplicative inverse of a real number x is a real number y such that xy = 1. “For every real number except zero, there is a multiplicative inverse.”

**Is the sum of a number and its multiplicative inverse zero True or false? ›**

**The sum of a number and its inverse will always be equal to 0**, as they are opposite numbers and when added, they nullify each other.

**Can multiplicative identity be 0? ›**

**No, 0 is not a multiplicative identity element** because if 0 is multiplied by any number the result will always be 0. The multiplicative identity element is 1 because when the number 1 multiplies with any number, it does not change the value of the number or we can say the value remains unchanged.

**Is every whole number has a multiplicative inverse True or false? ›**

**It is true that every non zero number has a multiplicative inverse as an integer**. The multiplicative inverse of a fraction is called the reciprocal.

**Is multiplicative inverse of 0 undefined? ›**

The multiplicative inverse of zero does not exist. This is because **0xN=0 and 1/0 is undefined**.

### Is zero a real number which has no multiplicative inverse? ›

**Since division by zero is not defined, Zero has no multiplicative inverse.**

**What is the product of non zero rational number and its multiplicative inverse? ›**

∴ The product of a rational number and its multiplicative Inverse = **1 or Multiplicative Identity**.

**What is the multiplicative inverse of a? ›**

The multiplicative inverse of 'a' is denoted by a^{-}^{1} or 1/a. In other words, when the product of two numbers is 1, they are said to be multiplicative inverses of each other. The multiplicative inverse of a number is defined as the division of 1 by that number.

**What does multiplicative inverse of a number mean of the number? ›**

The multiplicative inverse of a number, say, N, is represented by 1/N or N^{-}^{1}. It is also called reciprocal, derived from the Latin word 'reciprocus'. The meaning of inverse is **something which is opposite**.

**What is the multiplicative inverse of the real number a? ›**

In mathematics, a multiplicative inverse or reciprocal for a number x, denoted by 1/x or x^{−}^{1}, is a number which when multiplied by x yields the multiplicative identity, 1. The multiplicative inverse of a fraction a/b is b/a. For the multiplicative inverse of a real number, **divide 1 by the number**.

**What is the multiplicative inverse of zero by one? ›**

Hence, the multiplicative inverse of is undefined.

**Is multiplicative inverse of 1 is 1 True or false? ›**

Answer: The product with multiplicative inverse should be 1. Here, the product is not 1, hence the given statement is FALSE.

**What is multiplicative inverse of a fraction for which number it does not exist? ›**

The multiplicative inverse of a fraction a/b is **b/a**. But in the case of zero, it is not possible. Conclusion: ∴ 0 has no multiplicative inverse.

**Is the multiplicative inverse of a negative number? ›**

So, the multiplicative inverse of a negative number will be **a negative number only**.

**Why is it impossible to find the multiplicative inverse of zero? ›**

The short answer is that 0 has no multiplicative inverse, and **any attempt to define a real number as the multiplicative inverse of 0 would result in the contradiction 0 = 1**.

### Can a number be its own multiplicative inverse? ›

Therefore, **the two rational numbers which are their own multiplicative inverses are 1 a n d - 1** .

**Is the multiplicative identity true or false? ›**

Also, **1 is the multiplicative identity for rational numbers** because the product of 1 and any rational number is the rational number itself. Thus, 1 is the multiplicative identity for whole numbers, integers and rational numbers.

**Is it true that every real number has an additive inverse? ›**

For example, since addition of real numbers is associative, **each real number has a unique additive inverse**.

**What is the type of the product of a non zero rational number and an irrational number? ›**

The product of any rational number and any irrational number will always be **an irrational number**.

**What does it mean for two numbers to be reciprocals or multiplicative inverses? ›**

A reciprocal, or multiplicative inverse, is simply **one of a pair of numbers that, when multiplied together, equal 1**. If you can reduce the number to a fraction, finding the reciprocal is simply a matter of transposing the numerator and the denominator.

**What is the multiplicative inverse of a number is the number? ›**

The multiplicative inverse of a number, say, N, is represented by **1/N or N ^{-}^{1}**. It is also called reciprocal, derived from the Latin word 'reciprocus'.

**What is multiplicative inverse of a number? ›**

Multiplicative inverse of a number is its reciprocal.

**Which of the following is the multiplicative inverse of a number or a? ›**

The multiplicative inverse of a number is a number that, when multiplied by the given number, gives 1 as the product. By multiplicative inverse definition, it is the reciprocal of a number. The multiplicative inverse of a number “a” is represented as **a ^{-}^{1}** or .

**How is a number related to its multiplicative inverse? ›**

The multiplicative inverse of a number is defined as a number that when multiplied by the original number gives the product as 1. The multiplicative inverse of 'a' is denoted by a^{-}^{1} or 1/a. In other words, when the product of two numbers is 1, they are said to be multiplicative inverses of each other.

**Is zero a real number in math? ›**

**Zero is a real number because it is an integer**. Integers include all negative numbers, positive numbers, and zero. Real numbers include integers as well as fractions and decimals. Zero also represents the absence of any negative or positive amount.

### Is the inverse of 0 undefined? ›

The short answer is that **0 has no multiplicative inverse**, and any attempt to define a real number as the multiplicative inverse of 0 would result in the contradiction 0 = 1.

**Is one a multiplicative inverse? ›**

Similarly for 1, **the multiplicative inverse is also 1**.