MATHEMATICS HIGH SCHOOL

What is the value of the expression 72 – 42?

Answers

Answer 1
Answer:

Answer:

72-42=30

the correct answer is 30

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Answer 2
Answer:

Answer:

30

Step-by-step explanation:

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Which statements are true for irrational numbers written in decimal form? A. Irrational numbers are nonterminating. B. Irrational numbers are repeating. C. Irrational numbers are nonrepeating. D. Irrational numbers are terminating.

Answers

The correct options are A and C because irrational numbers are nonterminating and nonrepeating.

Given:

Some statements for irrational numbers are written in decimal form.

Explanation:

Rational number: A rational number can be defined in the form of (p)/(q),q\neq 0. Rational numbers are either terminating or repeating decimal numbers.

Examples: (3)/(5),2.555...,4.5 etc.

Irrational number: An irrational number cannot be defined in the form of (p)/(q),q\neq 0. Irrational numbers are nonterminating and nonrepeating decimal numbers.

Examples: √(3),\pi ,1.35742784... etc.

Therefore, the correct options are A and C.

Learn more:

brainly.com/question/16940513

The correct answers are

A. Irrational numbers are nonterminating; and C. Irrational numbers are nonrepeating.

Explanation:

Irrational numbers are numbers that cannot be written as rational numbers, or fractions.

Terminating decimals have a specific endpoint; this means we can find the place value of the last digit of the number and write it as a fraction (if it ends in the tenths place, it is a fraction over 10; if it ends in the hundredths place, a fraction over 100; etc.).

Repeating decimals can also be written as a fraction; for example, 0.3 repeating is 1/3; 0.6 repeating is 2/3; 0.1 repeating is 1/9; etc.

This means that irrational numbers must be nonrepeating and nonterminating.

Which is the solution to the equation 2x+ 4= -8? A.) x= -2
B.) x= -8
C.) x= -6
D.) x= -1

Answers

x = -6


2x + 4 = -8

Subtract 4 to from sides
2x = -12

divide both sides by 2
x = -6

The correct answer is C. -6

2 x -6 + 4 = -8

Hope this helps

Divide. (4x^3+2x+1)÷(x+1)4x^2−4x+6+5/x+1

4x^2−4x+6−5/x+1

4x^2+4x−6−5/x+1

4x^2+4x+6−5/x+1

Answers

(4x^3+2x+1)/(x+1)=4x^2-4x+6-(5)/(x+1)

A farmer is planting a straight row of crops with 3 feet between each plant is 23 are planted what is the distance between the first and last plant

Answers

The distance between the first and last plant is \fbox{\bf{\text{66 feet}}}.

Further explanation:

Given:

A farmer is planting a straight row of crops with 3 feet between each plant.

Calculation:

Consider the number of plant as x.

The number of spaces S between the plants is calculated as follows:

S=x-1                                                                                  ……(1).

Since, the number of plants are 23, Substitute 23 for x in equation (1) to obtain the number of spaces between the plants.

\begin{aligned}S&=23-1\n&=22\n\end{aligned}

Since, the distance between each plant is 3 feet, the distance D between the first and last plant is calculated as follows:

D=3S                                                                                      ……(2)

Substitute 22 for S in equation (2) to obtain distance D between the first and last plant.

\begin{aligned}D&=3\left({22}\right)\n&=66\,\,{\text{feet}}\n\end{aligned}

Thus, the distance between the first and last plant is  \fbox{\bf{\text{66 feet}}}.

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1. Which function has an inverse that is also a function? {(–1, –2), (0, 4), (1, 3), (5, 14), (7, 4)} {(–1, 2), (0, 4), (1, 5), (5, 4), (7, 2)} {(–1, 3), (0, 4), (1, 14), (5, 6), (7, 2)} {(–1, 4), (0, 4), (1, 2), (5, 3), (7, 1)}  

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2. A given line has the equation 10x + 2y = −2. what is the equation, in slope-intercept form, of the line that is parallel to the given line and passes through the point (0, 12)? y = ( )x + 12  

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3. what are the domain and range of the function f(x) = 3x + 5?  

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Answer Details :

Grade: Middle School

Subject: Mathematics

Chapter: linear equation

Keywords:Plant, farmer, crops, feet, A farmer is planting, space between the plant is 3 feet, linear equation, straight lines, function, number of spaces.

Final answer:

The distance between the first and last plant in a straight row of 23 crops with a spacing of 3 feet each is 66 feet. This is calculated using the formula: (Number of plants - 1) * Distance between plants.

Explanation:

The problem requires you to find the total distance from the first to the last plant in a row of crops considering that each plant is planted 3 feet apart. This type of problem can be solved by simple arithmetic calculations.

You might think you should simply multiply the number of plants by the distance between them, but this would not provide the correct answer. The reason is that the distance between the plants is not the same as the distance from the first to last plant.

For example, if the farmer only planted two crops, there would only be 3 feet between them, not 6. Therefore, we need to use the formula: (Number of plants - 1) * Distance between plants.

To solve for our question, we’d get: (23 plants - 1) * 3 feet = 66 feet. Thus, the distance between the first and last plant is 66 feet.

Learn more about Plant Spacing Calculation here:

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Carly tried to solve an equation step by step. \qquad\begin{aligned} -4(7j+2)&=10\\\\ \\ 7j+2&=-40&\green{\text{Step } 1}\\\\ \\ 7j&=-42&\blue{\text{Step } 2}\\\\ \\ j&=-6&\purple{\text{Step } 3}\\\\ \end{aligned} −4(7j+2) 7j+2 7j j ​ =10 =−40 =−42 =−6 ​ Step 1 Step 2 Step 3 ​ Find Carly's mistake.

Answers

Answer:

x+6=±5

Step-by-step explanation:

Final answer:

Carly's mistake occurred in Step 2. She incorrectly divided both sides of the equation by 7 instead of subtracting 2 from both sides.

Explanation:

Carly's mistake occurred in Step 2. In this step, she incorrectly divided both sides of the equation by 7 instead of subtracting 2 from both sides. Let's correct her mistake:

-4(7j+2) = 10
7j+2 = -40
7j = -42
j = -6

Instead of dividing both sides by 7, Carly should have subtracted 2 from both sides:

7j + 2 - 2 = -40 - 2
7j = -42
j = -6

Therefore, Carly should have subtracted 2 from both sides in Step 2 instead of dividing by 7.

EFGD is a parallelogram. Find x.A. 1
B. 7
C. 11
D. 6

and,

If ABCD is a parallelogram, what is the length of BD?

A. 10
B. 12
C. 7
D. 5

Answers

Answer:

x = 11

BD = 10

Step-by-step explanation:

Solving for x

The opposite sides if a parallelogram are equal and parallel.

Hence,

2x - 5 = 17

Collecting like terms:

2x = 17 + 5

2x = 22

x = 11

If E is a midpoint, then BE equals to DE

Since BE = 5, then

BD = 2 * BE

BD = 10
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