MATHEMATICS
HIGH SCHOOL

Answer: To solve for x, multiply out the left side, set the equation equal to zero, then solve the quadratic equation using factoring or quadratic formula.

Answer:

To simplify the other user's answer, it's Option A) {1,4}.

COLLEGE

A chess player played 44 games total. If he won 16 of the games, what is the ratio of games he lost to games he won?

56 ratio is it so yep

HIGH SCHOOL

Is the inequality sometimes,always, or never true ? A. 3(x +3) >- 3 (2 +x)

B. 9-x-5<-x+4

A. 3(x + 3) > -3(2 + x) SOMETIMES TRUE

3(x + 3) > -3(2 + x) |use distributive property a(b + c) = ab + ac

3x + 9 > -6 - 3x |add 3x to both sides

6x + 9 > -6 |subtract 9 from both sides

6x > -15 |divide both sides by 6

x > -15/6

x > -2.5

B. 9 - x - 5 < - x + 4 NEVER TRUE

9 - x - 5 < - x + 4

4 - x < - x + 4 |add x to both sides

4 < 4 FALSE

3(x + 3) > -3(2 + x) |use distributive property a(b + c) = ab + ac

3x + 9 > -6 - 3x |add 3x to both sides

6x + 9 > -6 |subtract 9 from both sides

6x > -15 |divide both sides by 6

x > -15/6

x > -2.5

B. 9 - x - 5 < - x + 4 NEVER TRUE

9 - x - 5 < - x + 4

4 - x < - x + 4 |add x to both sides

4 < 4 FALSE

COLLEGE

3. A set of n = 18 pairs of scores (X and Y values) has SSX = 20, SSY = 80, and SP = 10. If the mean for the X values is MX = 8 and the mean for the Y values is MY = 10. a. Calculate the Pearson correlation for the scores. b. Find the regression equation for predicting Y from the X values. Gravetter, Frederick J. Statistics for The Behavioral Sciences (p. 556). Cengage Learning. Kindle Edition.

Answer:

a. Pearson Correlation

r= or 0,25

b. The regression equation is

Step-by-step explanation:

a. Pearson Correlation

Using the equation for Pearson correlation:

b. Regression

Using regression equation

1.

2.

3.

So replacing first 'b' because is content in 'a' equation

Knowing 'b' can know 'a' and complete the equation

Replacing in the equation 1:

1.

MIDDLE SCHOOL

What is the number of grams in 500 kilograms?

A)0.5

B)5,000

C)50,000

D)500,000

Answer: D) 500,000

Step-by-step explanation:

There are 1,000 grams per kilogram.

D) 500,000 is the answer