Which oddered pair is the the system of equation?
1 answer:
Answer:
(3, -9)
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS Equality Properties <u>Algebra I</u>
Solving systems of equations using substitution/elimination Solving systems of equations by graphing Step-by-step explanation:
<u>Step 1: Define systems</u>
-5x - 3y = 12
y = x - 12
<u>Step 2: Solve for </u><em><u>x</u></em>
<em>Substitution</em>
Substitute in <em>y</em>: -5x - 3(x - 12) = 12 Distribute -3: -5x - 3x + 36 = 12 Combine like terms: -8x + 36 = 12 Isolate <em>x</em> term: -8x = -24 Isolate <em>x</em>: x = 3
<u>Step 3: Solve for </u><em><u>y</u></em>
Define original equation: y = x - 12 Substitute in <em>x</em>: y = 3 - 12 Subtract: y = -9
<u>Step 4: Graph systems</u>
<em>Check the solution set.</em>
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Answer:
26/x = 13
x = 2
Step-by-step explanation:
2(x - 4) = 4
2x - 8 = 4
2x = 4 + 8
2x = 12
x = 12/2
x = 6
26/x = 13
Cross product
26 = x * 13
26 = 13x
x = 26/13
x = 2
- 3.8x = -7.4
x = -7.4 / -3.8
x = 1.95
4(x - 1) - 3(x - 2) = -8
4x - 4 - 3x + 6 = -8
x + 2 = -8
x = -8 - 2
x = -10
The answer is B, all you have to do is combine like terms 8x+9x and 12+ -3
No
Let the groups be x and 2x
Its decimal not natual so can't be divided
They got the 1.2 minutes by taking the total number of minutes (6) and dividing them by the number of laps run (5). So 6 divided by 5 gives you the 1.2.
The quadratic formula is
and in the equation ax^2+bx+c=0
so now all you have to do is substitute the numbers into the quadratic formula