3 years ago

Ill give 100 points to anyone who gets this correct and brainliest.

Mathematics

1 answer:

wariber [46]3 years ago

7 0

Answer:

2.5x7 = 17.5 but since it's dropping -17.5

Step-by-step explanation:

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Answer:

I think it's b

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2 years ago

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nadezda [96]

answer is 142

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Will mark brainiest

stealth61 [152]

3+3+3+4+4+5+6+6+7+9+9=59
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Precalc.

viktelen [127]

Domain: x>0.

$(\log_2x)^2+7\log_2x+12=0$

Substitute $t=\log_2x\in\mathbb{R}$ . We have:

$t^2+7t+12=0\\\\a=1\qquad b=7\qquad c=12\\\\\\\Delta=b^2-4ac=7^2-4\cdot1\cdot12=49-48=1\\\\\sqrt{\Delta}=\sqrt{1}=1\\\\\\
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t_2=\dfrac{-b+\sqrt{\Delta}}{2a}=\dfrac{-7+1}{2}=\dfrac{-6}{2}=-3$

For t₁ there will be:

$\log_2x=t_1\\\\\log_2x=-4\\\\2^{-4}=x\\\\x=\dfrac{1}{2^4}\\\\\\x=\dfrac{1}{16}=0,0625\\\\\\\boxed{x\approx0,063}$

and for t₂:

$\log_2x=t_2\\\\\log_2x=-3\\\\2^{-3}=x\\\\x=\dfrac{1}{2^3}\\\\\\x=\dfrac{1}{8}\\\\\\\boxed{x=0,125}$

Answer d)

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3 years ago

What is the measure of an angle that turns through 3/4 of a complete circle

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