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Tutors Answer Your Questions about Equations (FREE)
Question 170856: In 1945, when the United Nations was formed, there were 51 member nations. In 1987, there were 159 member nations. Write an equation that gives the number of nations in the UN, y, in terms of the year, t. Let t=0 correspond to 1945 and assume that membership followed a linear pattern.
Do I start by making two points? (51,0) (159,42) ?? Help: In 1945, when the United Nations was formed, there were 51 member nations. In 1987, there were 159 member nations. Write an equation that gives the number of nations in the UN, y, in terms of the year, t. Let t=0 correspond to 1945 and assume that membership followed a linear pattern.
Do I start by making two points? (51,0) (159,42) ?? Help
Click here to see answer by jim_thompson5910(9403)  |
Question 170837: Tina, Dawn and Harry raised $175 total for their class trip. Tina raised three times as much as Dawn. Dawn raised twice as much as Harry. How much did each raise? : Tina, Dawn and Harry raised $175 total for their class trip. Tina raised three times as much as Dawn. Dawn raised twice as much as Harry. How much did each raise?
Click here to see answer by Mathtut(570) |
Question 170834: What number must you add to 128 and subtract from 256 so that the answers to both examples are equal? Please help me: What number must you add to 128 and subtract from 256 so that the answers to both examples are equal? Please help me
Click here to see answer by jim_thompson5910(9403) |
Question 170836: The hockey team played 12 games this year. They lost one more than they tied. They won two more than they lost. How many games won, lost and tied?
: The hockey team played 12 games this year. They lost one more than they tied. They won two more than they lost. How many games won, lost and tied?
Click here to see answer by stanbon(19020) |
Question 170745: 24 inch wire, cut into 2 piece, twice the length of shorter piece is equal to the length of the longer piece, what is the length of the longer piece?: 24 inch wire, cut into 2 piece, twice the length of shorter piece is equal to the length of the longer piece, what is the length of the longer piece?
Click here to see answer by checkley77(3654) |
Question 170781: Hi
I need help with my math homework. I'm having trouble on this equation. Please help
Solve for d
13d-53=9d+19
Thanks
-Julie: Hi
I need help with my math homework. I'm having trouble on this equation. Please help
Solve for d
13d-53=9d+19
Thanks
-Julie
Click here to see answer by nerdybill(1129) |
Question 170722: My questions are...what are the multiplicative inverse of these numbers:
3/7
-4/11
7/2
9/5
-5
6 1/3
4 1/9
17 1/2
-15 2/3
: My questions are...what are the multiplicative inverse of these numbers:
3/7
-4/11
7/2
9/5
-5
6 1/3
4 1/9
17 1/2
-15 2/3
Click here to see answer by jim_thompson5910(9403) |
Question 170707: Write in scientific notation.
(6.2 x 10^-5)(3 x 10^3)
________________________
2 x 10^4
I'm sure you already know, but ^ with the number to the right, is an exponent.
Thanks for any help you can give me. I'm lost. : Write in scientific notation.
(6.2 x 10^-5)(3 x 10^3)
________________________
2 x 10^4
I'm sure you already know, but ^ with the number to the right, is an exponent.
Thanks for any help you can give me. I'm lost.
Click here to see answer by stanbon(19020) |
Question 170634: Solve the following equation:
4x-5=2x+5
HELP!!!! Thanks so much in advance!!: Solve the following equation:
4x-5=2x+5
HELP!!!! Thanks so much in advance!!
Click here to see answer by jim_thompson5910(9403) |
Question 170531: I am not a student, just doing some practice math for an engineering tech asst position at my current employer. I haven't been to school in 11 years and am just trying to refresh my memory. The problem I got stummped on is below:
4x-7=x/2
I've tried to mulitply/divide/add/subtract and somewhere I am getting all jumbled up. If you solve it could you please show me the steps taken. I am missing something due to there being a variable on both sides of the equation.
Thanks so much
Angel: I am not a student, just doing some practice math for an engineering tech asst position at my current employer. I haven't been to school in 11 years and am just trying to refresh my memory. The problem I got stummped on is below:
4x-7=x/2
I've tried to mulitply/divide/add/subtract and somewhere I am getting all jumbled up. If you solve it could you please show me the steps taken. I am missing something due to there being a variable on both sides of the equation.
Thanks so much
Angel
Click here to see answer by scott8148(2761) |
Question 170127: For the following equation: 3x - 2y = 11
Find x if y = 2
find y if x = 1/3: For the following equation: 3x - 2y = 11
Find x if y = 2
find y if x = 1/3
Click here to see answer by jim_thompson5910(9403) |
Question 170079: Can you please help me? The problem is: The area of Lake Michigan is 9420 square miles less than the area of Lake Superior, which is about one-fifth the size of the Caspian Sea(about 150,000 sq mi.) Write and solve an equation to find the approximate area of Lake Michigan. Thanks!: Can you please help me? The problem is: The area of Lake Michigan is 9420 square miles less than the area of Lake Superior, which is about one-fifth the size of the Caspian Sea(about 150,000 sq mi.) Write and solve an equation to find the approximate area of Lake Michigan. Thanks!
Click here to see answer by nerdybill(1129) |
Question 170027: I have five questions I need help with. Can't remember how to begin the problems
Given the following equation, 3x – 6y = 18; solve for y.: I have five questions I need help with. Can't remember how to begin the problems
Given the following equation, 3x – 6y = 18; solve for y.
Click here to see answer by checkley77(3654) |
Question 170027: I have five questions I need help with. Can't remember how to begin the problems
Given the following equation, 3x – 6y = 18; solve for y.: I have five questions I need help with. Can't remember how to begin the problems
Given the following equation, 3x – 6y = 18; solve for y.
Click here to see answer by midwood_trail(260) |
Question 170028: Verify that the ordered pair (2, 4) is a solution to the equation
3x + 4y = 22
: Verify that the ordered pair (2, 4) is a solution to the equation
3x + 4y = 22
Click here to see answer by checkley77(3654) |
Question 170029: For the following equation: 3x – 2y = 11:
Find x if y = 2
Find y if x = 1/3
Present the solutions as ordered pairs.
: For the following equation: 3x – 2y = 11:
Find x if y = 2
Find y if x = 1/3
Present the solutions as ordered pairs.
Click here to see answer by checkley77(3654) |
Question 170030: ) Find the slope and the y-intercept of the line represented by the equation: -3x + 4y = 8: ) Find the slope and the y-intercept of the line represented by the equation: -3x + 4y = 8
Click here to see answer by checkley77(3654) |
Question 170031: Write the equation of a line in slope-intercept form with the slope of -2/5 and y-intercept (0, -3).: Write the equation of a line in slope-intercept form with the slope of -2/5 and y-intercept (0, -3).
Click here to see answer by checkley77(3654) |
Question 169470: john is 6 years younger than joe. the sum of their ages is 26. write the equation: john is 6 years younger than joe. the sum of their ages is 26. write the equation
Click here to see answer by jojo14344(888) |
Question 169495: Solve each system by addition:determine if the equation is independent, dependent or inconsistent
x-y=3
-6x+6y=17
: Solve each system by addition:determine if the equation is independent, dependent or inconsistent
x-y=3
-6x+6y=17
Click here to see answer by stanbon(19020) |
Question 169844: I apologize in advance, but I am unsure as to the type of problems these are.
1. Simplify
(2x^7y^2/4xy^3)^3 I know that 2/4 is 1/2 but I do not know how to simplify the exponents inside the parenthesis or the cubed exponent on the outside of the parenthesis.
2. I have no idea where to begin on this problem
If 2x + 2 is >= 5x + 11 then? How do you solve this problem.
Thank you in advance!!: I apologize in advance, but I am unsure as to the type of problems these are.
1. Simplify
(2x^7y^2/4xy^3)^3 I know that 2/4 is 1/2 but I do not know how to simplify the exponents inside the parenthesis or the cubed exponent on the outside of the parenthesis.
2. I have no idea where to begin on this problem
If 2x + 2 is >= 5x + 11 then? How do you solve this problem.
Thank you in advance!!
Click here to see answer by stanbon(19020) |
Question 169844: I apologize in advance, but I am unsure as to the type of problems these are.
1. Simplify
(2x^7y^2/4xy^3)^3 I know that 2/4 is 1/2 but I do not know how to simplify the exponents inside the parenthesis or the cubed exponent on the outside of the parenthesis.
2. I have no idea where to begin on this problem
If 2x + 2 is >= 5x + 11 then? How do you solve this problem.
Thank you in advance!!: I apologize in advance, but I am unsure as to the type of problems these are.
1. Simplify
(2x^7y^2/4xy^3)^3 I know that 2/4 is 1/2 but I do not know how to simplify the exponents inside the parenthesis or the cubed exponent on the outside of the parenthesis.
2. I have no idea where to begin on this problem
If 2x + 2 is >= 5x + 11 then? How do you solve this problem.
Thank you in advance!!
Click here to see answer by checkley77(3654) |
Question 169718: A rectangular plot has been fenced with 500ft of wire. Find the length and width of the plot if the length is 4 more than twice the width. Be sure to show both length and width along with units in your answer.: A rectangular plot has been fenced with 500ft of wire. Find the length and width of the plot if the length is 4 more than twice the width. Be sure to show both length and width along with units in your answer.
Click here to see answer by midwood_trail(260) |
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