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Elena L [17]
4 years ago
8

Which of these strategies would eliminate a variable in the system of equations? x−2y=115x+3y=−11​

Mathematics
1 answer:
mafiozo [28]4 years ago
5 0

Answer:

multiply the top equation by -5, then add the equations

Step-by-step explanation:

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Kristel is considering hiring a moving company. Sanford's Plus charges an initial fee of $125 plus $165 per hour. Quality Moving
Anna35 [415]

Let the number of hours be $x

Initial charges by Sanford's Plus = $125

Per hour charges = $165

Total cost of Sanford's Plus company = 125 + 165x

Initial charges by Quality Moving Company = $200

Per hour charges = $145

Total cost of Quality Moving Company = 200 + 145x

If either company were hired for hours, the total cost would be the same

125 + 165x = 200 + 145x

Add -125 on both sides

125 - 125 + 165x = 200 + 145x-125

165x = 75 + 145x

Add -145 on both sides

165x - 145x = 75

20x = 75

Divide both side by 20, to find the value of x

x = 75/20

x = 3.75 hours

Total cost of Sanford's Plus company = 125 + 165x

x = 12 hrs

Total cost of Sanford's Plus company = 125 + 165(12)

Total cost of Sanford's Plus company = 125 + 1980

Total cost of Sanford's Plus company = $2105

5 0
3 years ago
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Use the following area model to multiply 29x97
alexandr402 [8]
The answer to 29×97 would be 2813
6 0
3 years ago
Simplify (3a3 – 7a2 + a) – (6a3 – 4a2 – 8).
ollegr [7]

Answer:

d. -3a3 – 3a² + a +8

Step-by-step explanation:

Simplify the expression.

5 0
4 years ago
Natalia is writing a recursive formula to represent the sequence 8,12,18,27 what value should she use as the common ratio in the
Marrrta [24]
Common ratio = second term / first term = 12 / 8 = 1.5
7 0
4 years ago
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In parallelogram GHJK if m KGH=25° find mJKG.
amm1812

Answer:

x = 155°

Step-by-step explanation:

Adjacent angles of a parallelogram are supplemenary angles . Supplemwntary angles are the angles whose sum is 180°. So,

KGH + JKG = 180°

=> 25° + x° = 180°

=> x = 180 - 25 = 155°

5 0
3 years ago
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