63 Answered Questions for the topic Substitution

03/31/15

#### solve the system of linear equations by substitution.

x-y=9
2x+5y=4
2x+3y=25
4x-y=15
3x-6y=2
4x+3y=-1

Substitution Linear Equations

03/31/15

#### solve the system of linear equations by substitution.

y=x+3
y=5x-5
y=3x-1
y=x-7
x=5y+2
x-4y=5

03/31/15

#### tell which equation you would choose to solve for one of the variables when solving the system by substitution. explain.

y=5x-2
2x+9y=10
3x-7y=12
3x-12y=6
1/5x+y=8
4x-3y=1

03/04/15

#### Solve each equation using the designated method

Solve 2x^2 + 8x -4 = 0 by completing the square.
Solve (x^2 +x)^2 -3(x^2+x) +2=0 using substitution, factoring, and the quadratic formula

Substitution Money

03/04/15

#### Word problem help, please :(

Sarah needs to prepare 170 pounds of blended coffee beans selling for $5.28 per pound. She plans to do this by blending together a high quality bean costing $6.25 per pound and a cheaper bean at...
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01/13/15

#### dried apricots that cost $8/kg with dried peaches that cost $6/kg to make a 20 kg mixture that costs $7.20/kg. How many kg of each type of fruit do they need?

Define variables, write an equation, and solve.

Substitution

11/04/14

#### one number is 1 less a second number. Twice the second number is 12 less than 4 times the first. find the two numbers.

Find the two numbers

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