| Subject | Date Asked | Expert |
|
| value of x | 7/17/2008 | John Zalewski |
Q: -1/2 x=-2/3
A: Kenny. -1/2x = -2/3 To solve this problem, we need to get the x factor by itself. We accomplish ...
|
| Math is my sore subject can you help me? | 7/17/2008 | Abe Mantell |
Q: I'm only 13 and i really suck at math, can you please go over my answers correct them, & explain why ...
A: Wow, you have many questions! Usually I would not answer so many at once, but I'll make an ...
|
| Watt-Hours | 7/15/2008 | Abe Mantell |
Q: An electric light bulb, for example marked “ 60 watts“, indicates that the bulb uses 60 watt-hours ...
A: Well, if the bulb consumes 60 watt-hrs of power in one hour, then the rate of power consumption is ...
|
| algebra | 7/9/2008 | Wei Chong |
Q: I still do not understand. How do you know when an equation has infinitely many solutions? How do ...
A: To find the solution(s). You should be given 2 equations (In college, may have to deal with 3 ...
|
| Math | 7/9/2008 | Abe Mantell |
Q: How do you know when an equation has infinitely many solutions? How do you know when an equation has ...
A: When you get something that is always true, there are INFINITELY many solutions. For example: ...
|
| Slope! | 7/8/2008 | Wei Chong |
Q: given the function f(x)=1/3x find the slope and the y intercept of the line graph the equation, it's ...
A: You are right. For f(x) = (1/3)x, the slope is 1/3 and the y-intercept is 0. It is important to ...
|
| Unit Conversion | 7/8/2008 | John Zalewski |
Q: I tutor a 5th grader, and he doesn't understand unit conversion well. I'm only a high school ...
A: Kelsey. Let's say you want to know the number of quarts there are in 7 gallons. You need to know ...
|
| percents | 7/5/2008 | John Zalewski |
Q: what is 1 % of a hundred and whats the easiest way to caluate %
A: Art. 1% of 100 is 1. To calculate percentage, divide. If you want to know what percentage 8 is of ...
|
| word problem | 6/28/2008 | John Zalewski |
Q: Nathan has 2 brothers, conner and josh. If we add 2 to conner's age, it is exactly 1/2 the age of ...
A: Viola. Nathan = N Conner = C Josh = J 2 + C = 1/2(12) (2 + Conner's age = 1/2 Josh's age.) 2 + ...
|
| ercentage Variance | 6/27/2008 | John Zalewski |
Q: Hope you can help!! What is the formula to work out a production variance percentage eg: Forecast ...
A: Rebecca. Since the actual amount is 1650 (150 above the forcasted amount), you need to divide 150 ...
|
| Math in your head | 6/26/2008 | John Zalewski |
Q: I already can do math in my head, but when it comes to division, it takes a little longer than ...
A: Patrick. I find that when I try to do division in my head I usually just divide it as is, without ...
|
| Quad Formula | 6/25/2008 | John Zalewski |
Q: How would you solve for this equation? 5x^2 = 43x - 24 I know the answer is (3/5,8), but I don't ...
A: Sara. x = -b +/- sqrt (b^2 - 4ac) / 2a 5x^2 - 43x + 24 = 0 a = 5; b = -43; c = 24 x = 43 +/- ...
|
| algebra | 6/24/2008 | John Zalewski |
Q: how do i work out this problem i am having trouble? -3=c-8 this is solving equations by adding or ...
A: Melanie. -3=c-8 Step 1 is to add 8 to both sides of the equation. We want to get the c factor by ...
|
| Fractions | 6/23/2008 | Wei Chong |
Q: Pipe on is 6'4" & Pipe 2 is 8'1" How do i express the length of each pipe in feet using mixed ...
A: If you need to refresh yourself on mixed fractions, here is a math resource for you (scroll down the ...
|
| Help with an equation | 6/23/2008 | John Zalewski |
Q: I am stuck on this one. The problem is 3.5c-c=630. I am at a lost as where to even start! It would ...
A: Amy. 3.5c - c = 630 Since we are solving for 'c,' we need to combine the c factors together. This ...
|
| solving multi step equations | 6/23/2008 | Wei Chong |
Q: My son is taking a summer course in math. It has been awhile since I was in school and I am having ...
A: I'll be glad to help. Below are 3 links to resources which explain the basics behind solving multi ...
|
| percentage | 6/22/2008 | Wei Chong |
Q: Can you please explain how to solve the folowing: If you receive $1500 and you are told that 8.375% ...
A: If I understand your question correctly, $1500 is the total when we add the 'amount before tax' with ...
|
| multiply out the brackets | 6/19/2008 | Wei Chong |
Q: (-1x)(x-9)
A: To remove the brackets, first you have to understand the basics behind removing brackets. If you not ...
|
| I'm having trouble solving my density problem | 6/18/2008 | Wei Chong |
Q: The question is: Find the density of a material that has a mass of 2kg and a volume of 5m3. Express ...
A: Before we begin, we need to understand how fractions are related to decimal numbers. The following ...
|
| Functions | 6/16/2008 | John Zalewski |
Q: Im studing to take a compass placement test and i totally forget how to solve this... if f(4)=0 and ...
A: Kimberlee. For 3x-12 to be the correct answer, it means that when x = 4, 3x-12 will equal 0. ...
|
| Algebra - Calculate Slope | 6/8/2008 | Wei Chong |
Q: Calculate the slope of a line passing through (2,5) with y intercept 3
A: These are the things that you should understand before you attempt to solve this1) Understand the ...
|
| math(rates) | 6/7/2008 | John Zalewski |
Q: 2 1/2 inches per minute,240 inches per hour, 1/4 foot per minute; which is fastest
A: Aisha. 240 inches per hour is the fastest rate. 1/4 foot is equal to 3 inches (12 inches/foot x ...
|
| Slopes | 6/5/2008 | John Zalewski |
Q: thank you
A: Kimberly. Slope is the measure of the 'rise over run' of a line. It is the 'm' in the equation of ...
|
| Fractions from time | 5/31/2008 | John Zalewski |
Q: Zalewski, And God bless you.. I've had such a torturous time with fractions and decimals ...
A: David. Since there are 60 minutes in an hour, if an employee shows up 15 minutes late, then they ...
|
| 4th grade math | 5/30/2008 | John Zalewski |
Q: my math question is when you change inches to miles?
A: Mercedes. Let's suppose you have 101,376 inches. We want to convert that amount to miles. 101,376 ...
|
| Dividing Fractions | 5/29/2008 | John Zalewski |
Q: I'm 12 years old and in the sixth grade can you tell me how to divide fractions
A: Melina. Let's try 1/3 / 2/7. Step 1 is to take the reciprocal of the second fraction. The ...
|
| math | 5/28/2008 | Wei Chong |
Q: draw an array to show 4x11=44
A: For 4 x 11, we let: 4 -> number of rows 11 -> number of '*' in each row Here's how you draw the ...
|
| equation standard form (fast help!) | 5/28/2008 | Wei Chong |
Q: I'm doing Algebra homework, and it says: A line passes through the points (4,6) and (-3,5). What is ...
A: Usually, it is recommended to get the equation of the line in slope-intercept form first. Then, ...
|
| Reciprocals | 5/21/2008 | Wei Chong |
Q: i will like to now how to do reciprocals for example how would you solve 0.75?
A: The idea behind reciprocal is quite simple. For example: i) reciprocal for x is 1/x ii) reciprocal ...
|
| percentages | 5/20/2008 | Wei Chong |
Q: I have 754 people, 150 of them are of a certain age group I want to know how to figure out what ...
A: First, before we calculate percentage, we need understand the basics on fractions first. This is ...
|
| stat | 5/20/2008 | John Zalewski |
Q: advantages of median
A: Naeem. I am sorry for taking so long to respond. Suppose you have twenty grades from a math test. ...
|
| appreciation | 5/20/2008 | John Zalewski |
Q: The value of a house at the end of 8 years was $189,000.What was original cost to the nearest ...
A: Lynn. I am sorry for taking so long to respond. We know that this particular house appreciates ...
|
| algebra | 5/19/2008 | John Zalewski |
Q: how do you solve y=2x-10 and y=4x-8
A: Jasmine. y = 2x-10 y = 4x-8 To solve this problem, we need to use substitution. Since we know ...
|
| math question | 5/16/2008 | John Zalewski |
Q: Tellwhether each equation represents direct variation between x and y. y=9/10x y=xy-8 y/x=8.25 x=y
A: Alyssa. Direct variation means that as the value of x (or y) changes, the value of the other will ...
|
| FOIL | 5/15/2008 | Wei Chong |
Q: Okay, why do we use the FOIL method in math anyways? What does it help us with?
A: The FOIL method is used when we multiply two binomials. From your question, I got an impression that ...
|
| percentages | 5/13/2008 | John Zalewski |
Q: i don't get how to do this at all so I'm going to ask you a couple of questions! 69 is what percent ...
A: Aaleah. When it asks for percent, you need to divide. 69 is what percent of 92 is solved by ...
|
| is there a formula | 5/13/2008 | Wei Chong |
Q: 1penny plus 2 pennies plus 3pennies upto 1 dollar is ??? 1penny plus 2 pennies plus 3pennies upto 2 ...
A: Let's take the first example: 1 penny plus 2 pennies plus 3 pennies up to 1 dollar (100 pennies) ...
|
| value of x | 5/10/2008 | John Zalewski |
Q: Find the value of x: x divide 7/8 = 3/5
A: Debbie. x / 7/8 = 3/5 Step 1: Take the reciprocal of 7/8 and change the division sign to ...
|
| Metric measures | 5/7/2008 | John Zalewski |
Q: I have forgot all the ratios of metric measures and help
A: Derick. Some of the more common ratios are shown below: 1000 millimeters = 1 meter 100 ...
|
| writing equations | 5/7/2008 | John Zalewski |
Q: Ian & Michael together weighed 48 pounds. Ian weighed two pounds more than Michael. How much did ...
A: Anthony. x = Ian y = Michael x + y = 48 y + 2 = x We see that x = y + 2 in the second ...
|
