1,070 Answered Questions for the topic Math Equations

Math Equations

04/04/13

#### Solve by the elimination method

7a+6b=23 -7a+b=12 Determine the solution of the system. Select the correct choice below and if necessary write the answer out in a ordered pair. Or is there infinitely many solutions Or is... more
Math Equations

04/04/13

#### Suppose that the elimination method results in the equation 0=0

What does this indicate about the number of solutions to the system of equations.   (a) The system has infinitely many solutions. (b) The system has three solutions. (c) The system has two... more
Math Equations

04/03/13

#### After solving a system of linear equations, how can you check your answer to determine whether it is correct?

Demonstrate the process of checking an answer with an example.
Math Equations

04/03/13

#### Using the XY Coordinate system

Draw a line through the point (4, 0) and (7, -2) and another line through thepoints (-1, -4) and (7, -2) on the same coordinate system. Do the linesintersect? If there is an intersection what does... more
Math Equations

04/03/13

#### What is the difference between intersecting and perpendicular lines?

Solve and check the following systems. 1) y = 2x 2) y = 3x 6x + y = 16 y – 5x = 20
Math Equations

03/30/13

#### Use the method of substitution to solve the system of linear equations.

4x-y=3 9x-2y=8 The solution is (In an ordered pair)   I need the ordered pair for the answer?
Math Equations

03/30/13

#### The perimeter of a rectangle is 38 ft. The length is 5 ft. longer than the width.

Find the dimensions. Write a system of linear equations and solve the resulting system. Let x be the length and y be the width. Answer the first equation 2x+2y=? Answer the second equation... more
Math Equations

03/30/13

#### Use the method of substitution to solve the system of linear equations.

3a=5-b 3a=4-b Select the correct choice below and if necessary type a ordered pair if the chosen answer is (a) (a) There is one solution. The solution is ? (b) There are infinitely many... more
Math Equations

03/29/13

#### Use the method of substitution to solve the system of linear equations.

4x-y=3 9x-2y=8 The solution is (In an ordered pair)
Math Equations

03/29/13

#### The perimeter of a rectangle is 38 ft. The length is 5 ft. longer than the width.

Find the dimensions. Write a system of linear equations and solve the resulting system. Let x be the length and y be the width. Answer the first equation 2x+2y=? Answer  the second equation... more
Math Equations

03/29/13

#### A tugboat goes 120 miles upstream in 20 hours. The return trip downtown takes 5 hours.

Find the speed of the tugboat without a current and the speed of the current. The speed of the tugboat is ?(mph) And the speed of the current is what? (mph) (Simplify your answers)
Math Equations

03/29/13

#### The combined land area of the countries A and B is 119,973 square kilometers.

Country A is larger by 473 square kilometers.     Determine the land area of each country.   The land area of country A is ? (square kilometers) The land area of country B is ? (square... more
Math Equations

03/29/13

#### Traffic signs are regulated by the Manual on Uniform Traffic Control Devices (MUTCD).

The perimeter of a rectangular traffic sign is 72 inches. Also, its length is 12 inches longer than its width. Find the dimensions of this sign. The width of the sign is ? (inches) The length of... more
Math Equations

03/29/13

#### Use the method of substitution to solve the system of linear equations.

3x+5y=3/4 y=4x-1 What's the solution? (Type an ordered pair, using integers or fractions)
Math Equations

03/29/13

#### The sum of two numbers 23, and their difference is 5.

Write a system of linear equations and the resulting system. Let x be the larger number and y be the smaller number. x+y=
Math Equations

03/29/13

#### Complete the table for each solution. Than identify the solution to both equations.

x          0    1      2      3 y=x+2   ?    ?      ?      ? y=6-x     ?    ?      ?      ?
Math Equations

03/28/13

#### A travel agency is offering two Orlando trip plans that include accommodations and pairs of tickets to theme parks.

Use the table below to answer the following questions. Trip Number of Nights Pairs of theme park tickets Cost A 3 2 $415 B 5 4$725 1) Write an equation about trip A where x represents... more
Math Equations Trinomials

03/28/13

Math Equations

03/27/13

#### How is the intersection of - graphs method- used to find a solution to two equations?

How do we express the solution to a system of equations in two variables?
Math Equations

03/27/13

#### What is the difference between an equation and systems of equations?

Do all systems have solutions? Explain or provide an example.
Math Equations

03/27/13

#### after college Julia is offered two different jobs. The table below summarizes the pay offered with each job. Write the correct answer.

Job   Yearly Salary   Yearly Increase A       $20,000$2500 B       $25,000$2000 1) Write an equationthat shows the pay y of Job A after xyears. 2)Write an equation that... more
Math Equations

03/24/13

#### A certain mountain has an elevation of 19,570 feet.

In 1904, the glacier on this peak covered 10 acres. By 2000 this glacier had melted to only 1 acre. (a) Assume that this glacier melted at a constant rate each year find this yearly/acres rate?... more
Math Equations

03/24/13

#### A certain region is losing about 15 million acres of rain forest each year

(a) Find a linear function f that calculates the change in acres of rain forest in millions in x years. Type an expression using x as the variable f(x)= (b) Find f(8) and interpret the result (... more
Math Equations

03/24/13

#### Find the slope-intercept form for the line satisfying the the following conditions.

x-intercept 2, y-intercept 3/5
Math Equations

03/24/13

#### A barrel contains 164 gallons of paint and is being drained at a constant rate of 13 gallons per minute.

Write an equation that models the number of gallons, g, after t minutes

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