What is −20÷45−20÷45 ? A. −25 B. −16 C− 1/16 D. − 1/25

Mathematics

1 answer:

stealth61 [152]3 years ago

7 0

The answer is -25 i just took the test/quiz

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Step-by-step explanation:

You have the following quadratic equation:

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$2(k-8)+3(-k+1)=-4k+11\\\\2k-16-3k+3=-4k+11\\\\2k-3k+4k=11+16-3\\\\3k=24\\\\k=8$

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$15x^2-8x+1=0\\\\x_{1,2}=\frac{-(-8)\pm \sqrt{(-8)^2-4(15)(1)}}{2(15)}\\\\x_{1,2}=\frac{8\pm 2}{30}\\\\x_1=\frac{1}{5}\\\\x_2=\frac{1}{3}$

Then, the roots of the equation (1) are

D) 1/5 e 1/3

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Therefore the coordinates of the focus is:
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What is −20÷45−20÷45 ? A. −25 B. −16 C− 1/16﻿ D. − 1/25

What is −20÷45−20÷45 ? A. −25 B. −16 C− 1/16 D. − 1/25