Evaluate the expression if xequalsminus1 and yequals7. 5x over x-y

Mathematics

1 answer:

erica [24]3 years ago

3 0

The answer is 5 over 8.

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Marianna [84]

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Option D is the correct option.

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M∠1=28°, m∠6=65°, m∠5=65°. Find m∠MAX

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Answer:

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Step-by-step explanation:

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3 years ago

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Help please! 6x^2+2x-9=0 A 6.4, -8.4 B 1.1, -1.4 C -2.2, 2.8 D -1.1, -1.4

Yakvenalex [24]

$6x^2+2x-9=0\\\\a=6;\ b=2;\ c=-9\\\\\Delta=b^2-4ac\to\Delta=2^2-4\cdot6\cdot(-9)=220\\\\x_1=\dfrac{-b-\sqrt\Delta}{2a};\ x_2=\dfrac{-b+\sqrt\Delta}{2a}\\\\x_1=\dfrac{-2-\sqrt{220}}{2\cdot6}=\dfrac{-2-\sqrt{220}}{12}\approx-1.4\\\\x_2=\dfrac{-2+\sqrt{220}}{2\cdot6}=\dfrac{-2+\sqrt{220}}{12}\approx1.1$

Answer: B. 1.1; -1.4.

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Can anyone help Me with this math question

nexus9112 [7]

Answer:

Step-by-step explanation:

no need to explain

hope it helps

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