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charle [14.2K]
4 years ago
15

Help me pls!Could u explain how to do it!In a simple way thanks!

Mathematics
1 answer:
malfutka [58]4 years ago
6 0
A) (x-c)²
= x²-2cx+c²
1. x×x = x²
2. 2×x×(-c) = -2cx
3. (-c)×(-c) = c²

b) (a-2b-c)²
= (a-2b-c)(a-2b-c)
= a²-2ab-ac-2ab+4b²+2bc-ca+2bc+c²
= a²-4ab-2ac+4b²+4bc+c²
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Which equation correctly uses point (–2, –6) to write the equation of this line in point-slope form? Y – 6 = y minus 6 equals St
GenaCL600 [577]

Answer:

Part 1) y+6=\frac{2}{5}(x+2)

Part 2) y+6=\frac{5}{2}(x+2)

Step-by-step explanation:

The equation of the line in point slope form is

y-y1=m(x-x1)

we're going to analyze two cases

<em>First case</em>

Point\ (-2,-6)

slope\ m=\frac{2}{5}

substitute

y+6=\frac{2}{5}(x+2)

therefore

y plus 6 equals StartFraction 2 Over 5 EndFraction left-parenthesis x plus 2 right parenthesis

<em>Second  case</em>

Point\ (-2,-6)

slope\ m=\frac{5}{2}

substitute

y+6=\frac{5}{2}(x+2)

therefore

y plus 6 equals StartFraction 5 Over 2 EndFraction left-parenthesis x plus 2 right parenthesis

5 0
3 years ago
Read 2 more answers
Ike and Brian live in a tall apartment building. Ike’s bedroom window is 52 feet above the ground. Brian's bedroom window is 79
Alenkasestr [34]

Answer: it is most definately A

Step-by-step explanation:

8 0
3 years ago
How do you answer this??
dezoksy [38]
<h3>Given</h3>
  • a rectangle x units wide and y units high divided into unit squares
<h3>Find</h3>
  • The total perimeter of the unit squares, counting each line segment once
<h3>Solution</h3>

For each of the y rows of squares, there are x segments at the top, plus another x segments at the bottom. The total number of horizontal segments is then

... horizontal segment count = (y +1)x

Likewise, for each of the x columns of squares, there are y segments to the left, plus another y segments to the right of the entire area. Then the total number of vertical segments is

... vertical segment count = (x+1)y

The total segment count is ...

... total segments = horizontal segments + vertical segments

.. = (y+1)x +(x+1)y

... total segments = 2xy +x +y

_____

<u>Check</u>

We know a square (1×1) has 4 segments surrounding it.

... count = 2·1·1 +1 +1 = 4 . . . . (correct)

We know the 3×3 window in the problem statement has 24 segments.

... count = 2·3·3 +3 +3 = 18 +3 + 3 = 24 . . . . (correct)

We know a 1×3 row of panes will have 10 frame elements.

... count = 2·1·3 +1 +3 = 6 +1 +3 = 10

It looks like our formula works well.

5 0
3 years ago
The graph of y= (x + 2)(x-2)(x + 1) is shown.
In-s [12.5K]

Answer:

Point C

Step-by-step explanation:

At point C, the graph is changing from decreasing to increasing.

7 0
2 years ago
Plz Help!
lukranit [14]
V= 3.14*5*4= 62.8 cubic units thanks!!
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