3 years ago

What is the slope of a line passing through the points (1,-10) and (4,12)

1 answer:

4 0

You would start out with the equation (y2-y1) over (x2-x1). So to solve this problem it would be (12-(-10) over (4-1) and your answer would be 22/3.

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Get a number 100 by using four sevens (7’s) and a one (1)?

Oksanka [162]

Answer 1: 177 – 77 = 100

Answer 2: (7+7) * (7 + (1/7)) = 100

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2 years ago

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1. 3 (x + 1)2 - 3

Ipatiy [6.2K]

A is 3
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3 years ago

The diameter of a circle is 6 yards. What is the circle's area? d=6 yd Use 3.14 for .

madam [21]

The circle's area is 88.74

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3 years ago

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If A = 3x2 + 3x - 6 and B = -2x2 - 6x + 7, thenA - B equals1) -5r- 11x + 132) 5r2 + 11x – 133) -5x2-x+14) 5x2 -*+1

Grace [21]

$3x^2-(-2x^2)+5x-(-6x)-6-(7)=5x^2+11x\text{ - 13}$

Therefore, the correct answer is:

$2)5x^2+11x\text{ - 13}$

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1 year ago

Can somebody please help me with question b please?

snow_tiger [21]

$\bf A=
\begin{bmatrix}
-2&0\\1&3
\end{bmatrix}\qquad B=
\begin{bmatrix}
1&0&3\\-1&3&0
\end{bmatrix}\\\\
-----------------------------\\\\
AB=
\begin{bmatrix}
(-2\cdot 1)+(0\cdot -1)&(-2\cdot 0)+(0\cdot 3)&(-2\cdot 3)+(0\cdot 0)\\\\
(1\cdot 1)+(3\cdot -1)&(1\cdot 0)+(3\cdot 3)&(1\cdot 3)+(3\cdot 0)
\end{bmatrix}$

as you notice above, is the first-row components from A, multiplying all the columns subsequently on B, and you add the products of that row, that gives you one component on the AB matrix

in the one above, we end up with a 2x3 AB matrix

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3 years ago