Tutors Answer Your Questions about Equations (FREE)
Question 179195: How do we write the equation of a vertical line? what would be an example?
The points (1,3),(2,5)(8,17),(50,101),and (1000,2001) all lie on line M.
The points (1,-1),(2,-3),(8,-15),(50-99),(and (1000-1999) all lie on line N.
a.form the equations of both the lines.
b.what are the co-ordinates of the intersections of lines M and N
c.write the co-ordinates of the intersections of lines M and N with the x-axis
d.write the co-ordinates of the intersection of lines M and N with the y-axis.
Click here to see answer by stanbon(75887)  |
Question 179220: A 10" pepperoni pizza serves 4 people and costs $4.50 and a 13" pepperoni pizza serves 6 people and costs $7.50. There are 12 people coming to your pizza party and you plan to serve each guest 2 pieces of pizza without spending any more money than you have to. Answer the following question - I will order (how many)_______ (size)_______ pizzas because________________________________
Click here to see answer by solver91311(24713)  |
Question 179296: Solve the equation :(8/(x+1))-(5/2)=(4/(3x+3))
x=
I need help solving this problem for x. I know I multiply the denominators by 6(x+1) but after that I am not sure what to do. Any help with this problem will be greatly appreciated. Thank you
Click here to see answer by ptaylor(2198)  |
Question 179651: Hello I have a question regarding the easiest way to find the positive divisors of a number. I know there is a way to find them in a quick way instead of going through every number.
For example I have this number 372. and even though I got the answer, it willtake me for ever to come up with 1,2,3,4,6,12,32,62,93,124,186,372.
Please can you explain me how can I find the positive divisors more effectively?
Thanks you as always
Click here to see answer by Mathtut(3670) |
Question 179657: Based on my previous questions and the answer provided:
``Hello I have a question regarding the easiest way to find the positive divisors of a number. I know there is a way to find them in a quick way instead of going through every number. For example I have this number 372. and even though I got the answer, it willtake me for ever to come up with 1,2,3,4,6,12,32,62,93,124,186,372. Please can you explain me how can I find the positive divisors more effectively? "
Answer: "You just have to obtain the prime factor decomposition of the number and then to combine those factors in all possible forms.
If they only ask you only by the NUMBER of divisors, that's a lot easier. It's only a problem of counting. For example:
756 = (3^3) * (2^2) * 7
Any factor you may have will be a combination (product) of these factors. You have available 3 "3"s, 2 "2"s and 1 "7", so
# of ways factor "3" may appear = 3 + 1 = 4 (3^0, 3^1, 3^2, 3^3)
# of ways factor "2" may appear = 2 + 1 = 3 (2^0, 2^1, 2^2)
# of ways factor "7" may appear = 1 + 1 = 2 (7^0, 7^1)
thus: # of ways these factors may be combined = 4*3*2 = 24
=> there are 24 factors
I HAVE ANOTHER QUESTION
I think i got a little lost. I got the last part, but how did you figure out that 756 = 3^3 *2^2 *7? Where did you get the numbers from. And also one last question, I would know that there are 24 numbers, but how would i know which ones will be the divisors?
And thanks again
Click here to see answer by Mathtut(3670) |
Question 179672: Four Times the sum of three consecutive integers is 48.
a. write an equation that could be used to find the integers
b. what are the integers
I believe the answer is Integers: 3,4, and 5 because 3+4+5 = 12 * 4 = 48. but I do not know how to write the equation.
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 180011: A cynlindrical water tank has a volume of 6(pie)x(to the power of 2)y(to the power of 4) cubic meters. The formula for the volume of a cylinder is (pie)r(to the power of 2)h. The water tank has a radius of xy meters. What is its height?
Click here to see answer by nerdybill(7384)  |
Question 180041: I know the answer to my question, because I kept multiplying, but I don't know howto show my work as a stratey. The question is. In a math class of 26 students, each girl drew a triangle and each boy drew a rectangle. There were 92 slides in all. How may girls and how many boys were in the class. The answer I came up with was 16 girls and 11 boys.
Click here to see answer by nerdybill(7384) |
Question 180041: I know the answer to my question, because I kept multiplying, but I don't know howto show my work as a stratey. The question is. In a math class of 26 students, each girl drew a triangle and each boy drew a rectangle. There were 92 slides in all. How may girls and how many boys were in the class. The answer I came up with was 16 girls and 11 boys.
Click here to see answer by scott8148(6628)  |
Question 180041: I know the answer to my question, because I kept multiplying, but I don't know howto show my work as a stratey. The question is. In a math class of 26 students, each girl drew a triangle and each boy drew a rectangle. There were 92 slides in all. How may girls and how many boys were in the class. The answer I came up with was 16 girls and 11 boys.
Click here to see answer by Earlsdon(6294) |
Question 180134: Hi I have a problem that is tricky, a bicyclist and a hiker leave the same place at the sametime and travel in the same direction. The bicyclist travels three times as fast as the hiker. At the end of 3 hrs they are 24 miles apart. How fast does the hiker travel.
I tried looking at all angles but could not get a suitable ,if you could provide a suitable formula using x + y. Thanks This is a uniform motion problem from a study unit book for an on line course from penn foster its algebra part 3. 2469C-1
Click here to see answer by Alan3354(69443)  |
Question 180134: Hi I have a problem that is tricky, a bicyclist and a hiker leave the same place at the sametime and travel in the same direction. The bicyclist travels three times as fast as the hiker. At the end of 3 hrs they are 24 miles apart. How fast does the hiker travel.
I tried looking at all angles but could not get a suitable ,if you could provide a suitable formula using x + y. Thanks This is a uniform motion problem from a study unit book for an on line course from penn foster its algebra part 3. 2469C-1
Click here to see answer by stanbon(75887) |
Question 180209: I've been trying to figure this problem out but I just don't know how to do it. Any help would be greatly appreciated
6 gum drops and 10 lollipops cost $1.36, but 6 lollipops and 10 gum drops cost $1.20, how much does each lollipop and gum drop cost?
Click here to see answer by mgmoeab(37)  |
Question 180237: I got this problem:
For a given two-digit positive integer, the tens digits is 5 greater than the units digit. the sum of the digits is 11. Find the integer.
I got so far this:
x(!0(5) + y(!) = 11. But that i'm not going any where. Can you tell me please what is wrong with my reasoning and can solve this.
Thank you as always
Click here to see answer by Mathtut(3670) |
Question 180239: This is actually a word problem!
To create a breakfast beverage, cherry juice in two concentrations, 19% and 60%, must be combined into a solution that will be mixed with another type of juice to produce the beverage. If 70 gallons of 19% juice is used, how many gallons of the 60% juice must be used to obtain a 50% cherry juice solution?
Click here to see answer by Mathtut(3670) |
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