Which expression is equivalent to 6x + 7- 12.2 - (32 + 2) - x?

Mathematics

1 answer:

Leto [7]2 years ago

3 0

Answer:

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Step-by-step explanation:

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Solve the system of equations by substitution. What is the solution for x? 2x + y = 1 4x + 2y = −1

lapo4ka [179]

Solve your system of equations.

2x+y=1;4x+2y=−1

Solve 2x+y=1 for y:

2x+y+−2x=1+−2x(Add -2x to both sides)

y=−2x+1

Substitute (−2x+1) for y in 4x+2y=−1:

4x+2y=−1

4x+2(−2x+1)=−1

2=−1(Simplify both sides of the equation)

2+−2=−1+−2(Add -2 to both sides)

0=−3

Answer: No solution. C)

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If a/4 = 9/a, then<br> a²=36<br> 4a = 9a<br> a + 4 = 9 + a<br> a - 4 = 9 - a

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Answer:

Option A is correct.

The given expression : $\frac{a}{4} = \frac{9}{a}$ then;