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3 years ago

5

Crystal bought 24 hockey tickets of $82 adult tickets cost 5.50 and charge children’s tickets cost 2.00 how many adults and chil

dren tickets did she buy

1 answer:

damaskus [11]3 years ago

6 0

Multiply it then divide it

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F(x) = 4x^2 - 3x + 2kx + 1

dybincka [34]

$f(x)=4x^2-3x+2kx+1=4x^2+(2k-3)x+1\\\\a=4;\ b=2k-3;\ c=1\\\\function\ has\ two\ zeros\ when\ \Delta=b^2-4ac > 0\\\\\Delta=(2k-3)^2-4\cdot4\cdot1=4k^2-12k+9-16=4k^2-12k-7 > 0\\\\a_k=4;\ b_k=-12;\ c_k=-7\\\\\Delta_k=(-12)^2-4\cdot4\cdot(-7)=144+112=256\\\\k_1=\frac{-b_k-\sqrt{\Delta_k}}{2a_k};\ k_2=\frac{-b_k+\sqrt{\Delta_k}}{2a_k}$

$\sqrt{\Delta_k}=\sqrt{256}=16\\\\k_1=\frac{12-16}{2\cdot4}=\frac{-4}{8}=-\frac{1}{2};\ k_2=\frac{12+16}{2\cdot4}=\frac{28}{8}=\frac{7}{2}\\\\a_k=4 > 0\ (up\ parabola\ arms-see\ the\ picture)\\\\Answer:k\in(-\infty;-\frac{1}{2})\ \cup\ (\frac{7}{2};\ \infty)$

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3 years ago

What is the distance between point A and point B to the nearest tenth?

Lyrx [107]

What is the number line i'm sorry but i can help without a number line that this question is based off of.

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3 years ago

What is 3%+5%+4565+76+90x6(7+5)?

lawyer [7]

I believe it’s 5,193.0315 I’m not to sure

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3 years ago

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Bob makes 4% commission on his sales as a real estate agent. If Bob sells a house for $249,000, how much money does he make on t

Fynjy0 [20]

Answer:

$9,960

Step-by-step explanation:

249000 x 0.4 = 9960

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3 years ago

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lisov135 [29]

The answer is fifteen yards

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