−2x+5y=13 16x+3y=25

−2x+5y=13 16x+3y=25

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Hardcover books cost $4 each and paperback cost $2 each. A person spends $26 for 8 books. How many hardcover books did she purchase?

the meat cost $6 per pound, the potatoes cost $3 per pound, and the carrots cost $1 per pound. You spend $48.50 on 13.5 pounds of food. You buy twice as many carrots as potatoe.

things i need, equations and answers i need the asap!!!!!!!!!!

A woman invests a sum of money at 6% and 3000 more than this 9%.

a merchant mixes some candy worth $3.50 per pound with cheap stuff worth $1.00 per pound. There are 10 more pounds of cheap stuff than the more expensive candy.

Please help, I can't figure out how to set up the problem. This should be elimination but I just need help setting it up. Please, its due tomorrow and I really have to get this done, thanks a lot...

The admission fee at the fair is $1.50 for children and $4.00 for adults. On a certain day, 2200 people enter the fair and $5050 is collected. How many children and adults attended? I'm...

Solve the system analytically 2x-5y+5z=13 5x-4y-2z=-36 x-y+4z=35 The solution set is {(_,_,_)} Solve this system 3x+3y+z=0 x-3y+2z=-21 8x-2y+3z=-41 The...

Solve the system with three unknowns x+y+z=-8 2x+y-z=2 x-y+z=4 Is this an empty set, does it have one solution, or many solutions? Solve this system...

3x+5y=-17 2x+4y=6 What equation did Bob have after he eliminated x?

word problem about rectangle perimeter and systems of equations by elimination.

Im conduesed

A traveler is walking on a moving walkway in an airport. The traveler must walk back on the walkway to get a bag he forgot. The traveler's ground speed against the walkway is 3ft/s and 7ft/s with...

the apple store sells ipads and Macbooks. ipods cost $200 each, and Macbooks cost $1,200 each. this year, the number of Macbooks they sold was twice the number of ipods they sold. their total sales...

use the elimination method to solve the system

Admissions to the Indianapolis children's museum cost $5 more for and adult than a child. Admission to the museum for Barbra and Jeff and their 5 children cost $55.50 . Find the cost of each adult...

Algebra Substitution method

Define two variables. Then write equations. Quantity-rate equations may be helpful. Use either the elimination method or the substitution method to solve the equations. A green turtle...

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