Math
Cliff has answered many Math questions from other students who need a little help on their homework and tests. Browse this list of questions to find out if Cliff already has an answer for you. If not, return to the Ask Cliff page to ask your Math question, keeping in mind, of course, that Cliff won't do your homework for you.
| 1. |
Given the set of numbers [7, 14, 21, 28, 35, 42], find a subset of these numbers that sums to 100. |
| 2. |
A number is 20 less than its square. Find all answers. |
| 3. |
Explain with words and an example how any number raised to the zero power is 1? |
| 4. |
If I had 550 coins in a machine worth $456.25, what would be the denomination of each coin? |
| 5. |
Of 100 students asked if they like rock and roll or country music, 7 said they like neither, 90 said they like rock and roll, and 57 said they like country music. How many students like both? |
| 6. |
In math, what is the definition of order of operations? |
| 7. |
What is the square root of 523,457? |
| 8. |
My teacher talks about the Greatest Common Factor. What's so great about it? |
| 9. |
How do I use domain and range in functions? |
| 10. |
What should I do if my teacher wants me to solve an inequality on a number line? |
| 11. |
How do you combine numbers and symbols in an algebraic equation? |
| 12. |
How do I go about rounding off a number? |
| 13. |
How can I double-check my answers to math equations? |
| 14. |
How do you factor a binomial? |
| 15. |
How do you combine like terms in algebra? |
| 16. |
Can you make it easier for me to understand what makes a number a prime number? |
| 17. |
Solving story problems is, well, a problem for me. Can you help? |
| 18. |
What's a quadratic equation, and how do I solve one? |
| 19. |
How do you add integers? |
| 20. |
How do you use factoring in quadratic equations? |
| 21. |
What is the absolute value of a negative number? |
| 22. |
How do you classify numbers, as in rational numbers, integers, whole numbers, natural numbers, and irrational numbers? I am mostly stuck on classifying fractions. |
| 23. |
How do you convert a fraction to a decimal or change a decimal to a fraction? |
| 24. |
I am trying to find all solutions to this algebra (factoring) problem, x3 – 3x2 – x + 3 = 0, and I keep getting the wrong answer. Please help! |
| 25. |
I'm having a hard time remembering percent of change. All I have is P (percent) = amount of change over original amount. Is there a better way of understanding it? |
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