The equation X − 20 = 210 for the unknown X .

Question

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Answer 1

Question

Chapter 5, Problem 1ECP

To determine

To solve: The equation X−20=210 for the unknown X.

Expert Solution & Answer

Answer to Problem 1ECP

The value of the unknown variable X is 230.

Explanation of Solution

Result used:

Opposite process rule:

“If an equation indicates a process such as addition, subtraction, multiplication, or division, solve for the unknown or variable by using the opposite process.”

Calculation:

The given equation is X−20=210.

This equation means that, ‘Some number X less 20 equals 210.

Since the equation process used subtraction, use the opposite process rule and solve for the variable X with addition.

To isolate the variable X on the left, add 20 to both sides of the equation.

X−20+20=210+20X+0=210+20X=230

That is, X=230.

Check the result by substituting X=230 in the original equation.

X−20 =? 210(230)−20 =? 210230−20 =? 210210 =? 210 (True)

Thus, the value of the unknown variable X is 230.

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You may need to use the appropriate appendix table or technology to answer this question. You are given the following information obtained from a random sample of 4 observations. 24 48 31 57 You want to determine whether or not the mean of the population from which this sample was taken is significantly different from 49. (Assume the population is normally distributed.) (a) State the null and the alternative hypotheses. (Enter != for ≠ as needed.) H0: Ha: (b) Determine the test statistic. (Round your answer to three decimal places.) (c) Determine the p-value, and at the 5% level of significance, test to determine whether or not the mean of the population is significantly different from 49. Find the p-value. (Round your answer to four decimal places.) p-value = State your conclusion. Reject H0. There is insufficient evidence to conclude that the mean of the population is different from 49.Do not reject H0. There is sufficient evidence to conclude that the…

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Answer 2

Question

Chapter 5, Problem 1ECP

To determine

To solve: The equation X−20=210 for the unknown X.

Expert Solution & Answer

Answer to Problem 1ECP

The value of the unknown variable X is 230.

Explanation of Solution

Result used:

Opposite process rule:

“If an equation indicates a process such as addition, subtraction, multiplication, or division, solve for the unknown or variable by using the opposite process.”

Calculation:

The given equation is X−20=210.

This equation means that, ‘Some number X less 20 equals 210.

Since the equation process used subtraction, use the opposite process rule and solve for the variable X with addition.

To isolate the variable X on the left, add 20 to both sides of the equation.

X−20+20=210+20X+0=210+20X=230

That is, X=230.

Check the result by substituting X=230 in the original equation.

X−20 =? 210(230)−20 =? 210230−20 =? 210210 =? 210 (True)

Thus, the value of the unknown variable X is 230.

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Answer 3

Question

Chapter 5, Problem 1ECP

To determine

To solve: The equation X−20=210 for the unknown X.

Expert Solution & Answer

Answer to Problem 1ECP

The value of the unknown variable X is 230.

Explanation of Solution

Result used:

Opposite process rule:

“If an equation indicates a process such as addition, subtraction, multiplication, or division, solve for the unknown or variable by using the opposite process.”

Calculation:

The given equation is X−20=210.

This equation means that, ‘Some number X less 20 equals 210.

Since the equation process used subtraction, use the opposite process rule and solve for the variable X with addition.

To isolate the variable X on the left, add 20 to both sides of the equation.

X−20+20=210+20X+0=210+20X=230

That is, X=230.

Check the result by substituting X=230 in the original equation.

X−20 =? 210(230)−20 =? 210230−20 =? 210210 =? 210 (True)

Thus, the value of the unknown variable X is 230.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 4

Question

Chapter 5, Problem 1ECP

To determine

To solve: The equation X−20=210 for the unknown X.

Expert Solution & Answer

Answer to Problem 1ECP

The value of the unknown variable X is 230.

Explanation of Solution

Result used:

Opposite process rule:

“If an equation indicates a process such as addition, subtraction, multiplication, or division, solve for the unknown or variable by using the opposite process.”

Calculation:

The given equation is X−20=210.

This equation means that, ‘Some number X less 20 equals 210.

Since the equation process used subtraction, use the opposite process rule and solve for the variable X with addition.

To isolate the variable X on the left, add 20 to both sides of the equation.

X−20+20=210+20X+0=210+20X=230

That is, X=230.

Check the result by substituting X=230 in the original equation.

X−20 =? 210(230)−20 =? 210230−20 =? 210210 =? 210 (True)

Thus, the value of the unknown variable X is 230.

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Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 5

Chapter 5, Problem 1ECP

To determine

To solve: The equation X−20=210 for the unknown X.

Expert Solution & Answer

Answer to Problem 1ECP

The value of the unknown variable X is 230.

Explanation of Solution

Result used:

Opposite process rule:

“If an equation indicates a process such as addition, subtraction, multiplication, or division, solve for the unknown or variable by using the opposite process.”

Calculation:

The given equation is X−20=210.

This equation means that, ‘Some number X less 20 equals 210.

Since the equation process used subtraction, use the opposite process rule and solve for the variable X with addition.

To isolate the variable X on the left, add 20 to both sides of the equation.

X−20+20=210+20X+0=210+20X=230

That is, X=230.

Check the result by substituting X=230 in the original equation.

X−20 =? 210(230)−20 =? 210230−20 =? 210210 =? 210 (True)

Thus, the value of the unknown variable X is 230.

Answer 6

Chapter 5, Problem 1ECP

To determine

To solve: The equation X−20=210 for the unknown X.

Expert Solution & Answer

Answer to Problem 1ECP

The value of the unknown variable X is 230.

Explanation of Solution

Result used:

Opposite process rule:

“If an equation indicates a process such as addition, subtraction, multiplication, or division, solve for the unknown or variable by using the opposite process.”

Calculation:

The given equation is X−20=210.

This equation means that, ‘Some number X less 20 equals 210.

Since the equation process used subtraction, use the opposite process rule and solve for the variable X with addition.

To isolate the variable X on the left, add 20 to both sides of the equation.

X−20+20=210+20X+0=210+20X=230

That is, X=230.

Check the result by substituting X=230 in the original equation.

X−20 =? 210(230)−20 =? 210230−20 =? 210210 =? 210 (True)

Thus, the value of the unknown variable X is 230.

Answer 7

Chapter 5, Problem 1ECP

To determine

To solve: The equation X−20=210 for the unknown X.

Answer 8

Expert Solution & Answer

Answer to Problem 1ECP

The value of the unknown variable X is 230.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Explanation of Solution

Result used:

Opposite process rule:

“If an equation indicates a process such as addition, subtraction, multiplication, or division, solve for the unknown or variable by using the opposite process.”

Calculation:

The given equation is X−20=210.

This equation means that, ‘Some number X less 20 equals 210.

Since the equation process used subtraction, use the opposite process rule and solve for the variable X with addition.

To isolate the variable X on the left, add 20 to both sides of the equation.

X−20+20=210+20X+0=210+20X=230