1,472 Answered Questions for the topic Linear Equations

Linear Equations

07/17/16

Linear Relations 3
  x y-3 -3-2 -1-1  1 0  3 1  5   x goes up by +1 each time.y goes up by +2 each time. For this linear relation, develop the equation for the relation.
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Linear Equations

07/17/16

Linear Relations 2
x y1 43 145 247 349 44 x goes up by +2 each time.y goes up by +10 each time. For this linear relation, develop the equation for the relation
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Linear Equations

07/16/16

Two cars leave towns 750 kilometers apart at the same time and travel toward each other.one car's rate is 16 kilometers per hour more than the other's
if they meet in 5 hours what is the rate of the faster car?
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Linear Equations Word Problems

07/14/16

How would you figure this out?
A vertical line, horizontal line and another line that passes through the origin all intersect at (–1,–5). What are the equations of the three lines?
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Linear Equations

07/12/16

Finding the unknown number
In a fraction, twice the numerator is 2 more than the denominator. If 3 is added to the numerator and to the denominator, the new fraction formed is 2/3. Find the original number
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Linear Equations

07/12/16

Finding the unknown number
In a fraction, twice the numerator is 2 more than the denominator. If 3 is added to the numerator and to the denominator, the new fraction formed is 2/3. Find the original number.
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Linear Equations Word Problems

07/11/16

EASY WORD PROBLEM
The formula is m=4a+2c, where c= number of children; m= number of meatballs; a= number of adults how many meatballs are required for a party of 25 adults and 7 children
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Linear Equations Math Linear Algebra Vector

07/10/16

Let V be the vector set in R2 with the following: Addition: [x1x2]?[y1y2]=[0x2+y2] Scalar Multip.: a?[x1x2]=[0ax2] Which of 8 Vector Space Axioms are met?
I cannot for the life of me figure out which of these I am missing and/or over-including in my response to this question.
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Linear Equations Math Linear Algebra, Math

07/10/16

Since det(AB)=det(A)det(B) for all square nxn matrices A,B, why does det(A^-1) = 1/(det(A)) for all invertible nxn matrices A?
Please provide a detailed explanation, thank you!  
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Linear Equations

07/06/16

Solving a percent mixture problem
A scientist has two solutions, which she has labeled Solution A and Solution B. Each contains salt. She knows that Solution A is 65% salt and Solution B is 90% salt. She wants to obtain 130 ounces... more
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Linear Equations

07/06/16

your savings account had a balance of $2525 and on your summer vacation you plan to spend $80 per week.
Write a linear equation that modles this problem. What is your balance after your 8 week summer vacation?
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Linear Equations

07/06/16

Solving a percent mixture problem
A chef is going to use a mixture of two brands of Italian dressing. The first brand contains 6% vinegar, and the second brand contains 11% vinegar. The chef wants to make 350 millileters of a... more
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Linear Equations

07/06/16

Solving a percent mixture problem
a scientist has two solutions, which she has labeled solution A and Solution B. Each contains salt. She knows that Solutuin A is 60% salt and Solution B is 85% salt. She wants to obtain 130 ounces... more
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Linear Equations

07/05/16

Solve and show work please
You are saving money for a new car. Your parents give you $2,000 to help your saving get started and you can save $100 weekly. Write a linear equation that determines your savings (y) for a given... more
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Linear Equations Algebra 1

07/03/16

Solving a percent mixture problem
A chef plans to mix 100% vinegar with Italian dressing. The Italian dressing contains 12% vinegar. The chef wants to make 160 millileters of a mixture that contains 23% vinegar. How much vinegar... more
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Linear Equations

07/03/16

Solving a percent mixture problem
a chemical company makes two brands of antifreeze. The first brand is 55% pure antifreeze, and the second brand is 80% pure antifreeze. In order to obtain 50 gallons of a mixture that contains 70%... more
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Linear Equations

06/30/16

Solving a percent mixture problem
A scientist mixes water (containing no salt) with a solution that contains 40% salt. She wants to obtain 240 ounces of a mixture that is 20% salt. How many ounces of water and how many ounces of... more
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Linear Equations

06/18/16

Ashley, Brian, and Milan have a total of $68 in their wallets. Milan has 3 times what Brian has. Ashley has $7 less than Brian. How much does each have?
Solving linear equations!
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Linear Equations

06/14/16

A shcol copier can print 5 copies of a test per min and 8 copies of a quiz a min. If i make 167 copies in 25 min how many copies did i print?
I need to show my work.
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Linear Equations Math Slope Variation

06/02/16

Math question: If X decreases by...
Given the equation 5x+2y= 6   If x decreases by 4 units, what is the corresponding change in y?   If y decreases by 20 units what is the corresponding change in x?
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Linear Equations

05/18/16

Equation Relation
The average cost of a 30-second advertising slot during the Super Bowl increased linearly from $2.5 million in 2010 to $3.5 million in 2012. Find the equation that relates the cost (in millions of... more
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05/18/16

Functions project... Help!
For an upcoming project I have to pretend to create a virtual race as a spinoff if the Tortoise and the Hare. The animals I am using are an elephant (25 mph) and a mouse (8 mph). I have to write a... more
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05/18/16

Functions math project.. Help!
For my math project I have to pretend I am creating a virtual race as a spin off of the Tortouise and the Hare. In this race I am using an elphant (25 mph) and a mouse (8mph). I have to use a... more
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Linear Equations

05/16/16

What is its length?
The perimiter of a rectangle is twice the sum and its length. The perimeter is 34 meters and its length is 2 meters than twice its width.
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Linear Equations

05/15/16

7+0.6(1-y)=1.6y-5(y-0.2)
7+0.6(1-y)=1.6y-5(y-0.2)7+0.6-0.6y=1.6y-5y+110{7+0.6-0.6y}=10{1.6y-5y+1}70+6-6y=16y-50y+1076-6y=-34y+1076+28y=1028y=-66y=-66/28y=-33/14This is another question on the quiz and that is how i worked... more
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