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Answers by Kyle M.

Hi, Bob! Be sure to review your types of sampling designs & think about how unlikely it would be to get exactly 50 student responses from each college class using simple random sampling. Simple random sampling uses a numbered list, and randomly generated numbers are used to choose subjects...

Word problems require you to find the question & convert it into math symbols. Many students have difficulty with this, so don't feel bad about it. All it takes is some logical thinking, some discernment, a little stubbornness or cleverness, and plenty of practice. You can definitely improve...

Using elimination, we'll cancel out either x or y - whichever one is convenient - and leave the other one to resolve. Notice that there's a +9y in one equation & -9y in the other? We'll take advantage of that by adding the equations together: 6x +9y = 45 4x -9y = -75 ======== 10x...

Taylor's salary was multiplied by the Medicare percentage factor in order to find her deduction. We'll turn that operation backward to find her salary, but first convert 1.45% to a decimal by moving the decimal point 2 places to the left: 1.45%=0.0145 Next, divide her Medicare deduction...

1/4and1/2 LCD= (answer)

Hi, Wathik! When manipulating fractions into forms in which we can add & subtract, we must be able to find common denominators. I assume you realize that the bottom number of the fraction is the denominator. We must be able to make equivalent fractions out of any fraction, so that we are...

Hi, Cynthia! You might have done this correctly - maybe you should have more trust in your instincts - but let's go through it together.   Consiser the facts before us: 1. The initial cost estimate was $101 million. I believe we are expected to assume this was the amount budgeted...

I'm afraid I might not fully understand your question - which is to say I'm not certain what you are asking. Nonetheless, I will try to make my best speculation. If six friends enter college at the same time, one or more of them could graduate - though there is a 50% (0.5) probability that any...

Following the pattern I tried to describe in your previous question, start with your mean of 100 & mark 3 increments of 10 both below & above 100. The most common cases will fall right around 100 - from 90 to 110. The 2nd SD will include 80-89 & 111-120. The 3rd SD (called outliers)...

This distribution could have few samples or many samples, but the average - or mean - result is 10. The standard deviation of 3 tells us that a little more than 2/3 of all samples fall within +/-3 of that mean, so most results are from 7 to 13 (10-3 & 10+3). We call this the 1st standard...

Hi, Marilyn! I'm a nearby Wyzant tutor with much experience teaching algebra & general mathematics. That you're taking your class online could make scheduling tutoring sessions a bit easier & meeting location somewhat flexible. I work full time, but I'm often available after 5 or 6 pm...

When you say you want to learn to "do" quadratic equations, I take it to mean that you wish to learn to solve for the variable. Since you seem to be new at it, let's assume that you want help with some basic concepts that will help you move along toward the deeper concepts.   The...

If this is a multiple-choice question, let's eliminate two possibilities immediately - I believe there has been no Supreme Court decision ever to cause slave settlements to be created. The Dred Scott decision settled the other two choices, at least for the time being, and was controversial for...

This problem can be solved with the given information, so we should find that no facts are missing: 12 + 5x = 6 - x Add x to each side: 12 + 5x + x = 6 - x + x Combine like terms: 12 + 6x = 6 Subtract 12 from each side: 12 - 12 + 6x = 6 - 12 Do...

How about multiplying by 10?: (50x10)/(2.5x10) It now becomes 500/25: 500 divided by 100 is 5; 100 divided by 25 is 4; 5x4 is 20; Check your answer: 2.5x20=50  

This may look confusing, but you should combine like terms (-4x-4x is really -8x) & do the arithmetic to make it become clear: -8x=64 Now you simply solve for x by dividing each side by -8.