3 years ago

What is the square root of -1?

1 answer:

4 0

Simply, it cannot be done

You can’t find the square root of a negative number, but you can call this imaginary or i

The square root of -1=i

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Rasek [7]

Answer:

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½×6×p=9

3p=9

p=3mm

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2 years ago

The coordinates of point T are (0,5). The midpoint of ST is (2, -4). Find the coordinates of point S.

dolphi86 [110]

Answer: Coordinates for S (4,-13)

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2 years ago

What are the factors of 3x²+7x-20?

Leya [2.2K]

$3x^2+7x-20=0\\\\a=3;\ b=7;\ c=-20\\\\\Delta=b^2-4ac\\\\x_1=\frac{-b-\sqrt\Delta}{2a};\ x_2=\frac{-b+\sqrt\Delta}{2a}\\\\\Delta=7^2-4\cdot3\cdot(-20)=49+240=289;\ \sqrt\Delta=\sqrt{289}=17\\\\x_1=\frac{-7-17}{2\cdot3}=\frac{-24}{6}=-4;\ x_2=\frac{-7+17}{2\cdot3}=\frac{10}{6}=\frac{5}{3}\\\\\\3x^2+7x-20=3(x+4)(x-\frac{5}{3})\\\\\\3x^2+7x-20=0\iff x=-4\ \vee\ x=\frac{5}{3}$

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3 years ago

What is the 40th term of the sequence below? 14 9 4 -1

pshichka [43]

D = T2 - T1
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T40 = 14 + 39(-5)
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3 years ago

What is the equation of BD, simplified?

FromTheMoon [43]

Third option is the correct answer.

Answer:

$y = \bigg[ \frac{2b}{(2a - c)} \bigg]x - \bigg[ \frac{2bc}{(2a - c)} \bigg]$

Step-by-step explanation:

$y - y_1 = m(x - x_1) \\ \\ y - 0 = \bigg[ \frac{2b}{(2a - c)} \bigg] (x - c) \\ \\ y = \bigg[ \frac{2b}{(2a - c)} \bigg]x - \bigg[ \frac{2b}{(2a - c)} \bigg]c \\ \\ \purple { \boxed{ \bold{y = \bigg[ \frac{2b}{(2a - c)} \bigg]x - \bigg[ \frac{2bc}{(2a - c)} \bigg]}}} \\$

6 0

3 years ago