# Katalina

Popular questions and responses by Katalina
1. ## Help - Math

A teacher gave his class two quizzes; 80% of the class passed the first quiz, but only 60% of the class passed both quizzes. What percent of those who passed the first quiz also passed the second quiz?

A car is designed to last an average of 12 years with a standard deviation of 0.8 years. What is the probability that a car will last less than 10 years?

3. ## Ms. Sue Math Help Please

Which equation matches the statement "The product of 3 and the difference of a number and 10 is 15" Answer choices: 3 + (x - 10) = 15 3x - 10 = 15 3 (x - 10) = 15 3 x/10 = 15

4. ## Math - Help!!

You are a member of your local movie theater’s club. Every time you see a movie at the theater, you earn 2 advantage points. When you earn 100 points, you get a free movie pass. Currently, you have 40 advantage points. Write an equation to model the

Which of the following sets of terms is associated with air pollution caused by burning fossil fuels 1.acid rain, ozone hole, skin cancer 2.methane, smog, carbon dioxide 3.sulfur dioxide, smog, chlorofluorocarbons 4.carbon dioxide, smog, acid rain MY

6. ## MS. SUE - MATH HELP PLEASE

The sum of five times a number and twice a second number is 18, but the difference of three times the first number and seven times the second number is -22. Find the two numbers using the elimination method.

7. ## Math

You went to lunch with your friend, and the bill was \$19.00. Your lunch is \$3.00 more than your friend's. How much was your friend's lunch? Write and solve an equation.

8. ## Math - Check my answer?

Check my answer please: -6q + 5.8 = 23.8 - 5.8 - 5.8 -6q/-6 = 18/-6 q = -3

9. ## Help - MATH

The perimeter of a square is four times the length of one side. What is the graph of this relationship?

10. ## Math help

Write an equation with a variable on both sides of the equal sign that has infinitely many solutions. Solve the equation and explain why it has an infinite number of solutions.

11. ## Math, check my answer

Kelvin and Marsha are going to dinner and a movie this evening. Kelvin wants to have at least \$70 cash in his wallet. He currently has \$10. How much money, x, does Kelvin need to withdraw from the bank? Answer choices: x + 10 > 70; x > \$60 x + 10 ≥ 70; x

Solve: 7r - 7 = 2r + 18 My answer: 7r - 7r - 7 = 2r - 7r + 18 -7 = -5r + 18 -7 - 18 = -5r + 18 - 18 -25/-5 = -5r/-5 R = 5

Simplify. 3w - 10w MY ANSWER: -7w

14. ## Math - Help!!

7x over 8 (fraction = 21 I don't know how to solve this.

15. ## English

I am working on a debate on embryonic stem cell research. I've been assigned the side that is against it. I need some good, solid arguments that aren't just focusing on the ethics of it, but are about the practicality, the money, the success rate, etc. Do

16. ## English

I'm trying to find some quotes that talk about the power of the individual, especially in relationship to the government. I'm writing a paper on why mandatory military service prevents people from achieving their own goals, some of which, such as a

17. ## Economy

I am studying for a business test. We are supposed to learn the business/economic cycle, but it is not printed in my book. I know three of the steps are prosperity, recession and depression, but I know I am missing at least one or two. What are they? Thank

1. ## Math ~CHECK MY WORK~

Wendy, you did it great! Damon, you are supposed to write an inequality as stated in the problem. You wrote an equation.

posted on January 16, 2014
2. ## Help - MATH

My choices are: A. A line with a negative slope B. A horizontal line C. A vertical line D. A line with a positive slope

posted on January 16, 2014
3. ## Math - Help!!

Is it: 40 + 2m = 100?

posted on January 14, 2014
4. ## Math

Thanks

posted on January 14, 2014
5. ## Math help ms sue.

posted on January 13, 2014
6. ## Math

Subtract 3 from 10: 10 - 3 = ? That should give you, your answer.

posted on January 8, 2014
7. ## Math - Help!!

Ok, thanks!

posted on January 8, 2014
8. ## Math - Help!!

Oh, I get it now. Like this? : 7x / 8 = 21 x 8 x 8 7x/7 = 168/7 x = 24

posted on January 8, 2014
9. ## Math - Help!!

How does 7x = 168?

posted on January 8, 2014
10. ## Math - Help!!

Another way to write this is 7x/8 = 21

posted on January 8, 2014