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schepotkina [342]
3 years ago
8

Simplify 3a(- 3a+4)- 4(3-2)

Mathematics
1 answer:
Zarrin [17]3 years ago
6 0
-9a to the second power+12a-4
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PLEASE HELP!! (50 POINTS)
Marrrta [24]

Answer:

Since pair of opposite sides are parallel and adjacent sides meets at right angles, the quadrilateral COAT is a rectangle.

Step-by-step explanation:

The vertices of the given quadrilateral is C(2,0),O(7,0),A(7,2),T(2,2)

It is sufficient to show that pair of opposite sides are parallel and adjacent sides are perpendicular.

The slope of each side can be found using the formula;


m=\frac{y_2-y_1}{x_2-x_1}


Slope of CO,

M_{CO}=\frac{0-0}{7-2}=\frac{0}{5} =0

A line with a zero slope is a horizontal line.


The slope of OA,

M_{OA}=\frac{2-0}{7-7} =\frac{2}{0}

This slope is undefined.

A line with an undefined slope is a vertical line.

This shows that,the side CO and OA of the quadrilateral meets at right angle.


The slope of AT,

M_{AT}=\frac{2-2}{7-0}=\frac{0}{5}=0


This is also a horizontal line.

The slope of TC,


M_{TC}=\frac{2-0}{2-2} =\frac{2}{0}


This also a vertical line.


This implies that, side TC and side AT meets at Tat right angles and TC is parallel to OA.

Also AT is parallel to TO.


This shows that COAT is a rectangle.

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irina1246 [14]
Oh no my parrot is missing
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you are making necklaces for your friends. You have 72 blue beads and 42 red beads. Each friend will recieve a identical necklac
Leni [432]

Answer: 6

Step-by-step explanation: Because, 6 is the highest number you can multiply both with, 6x12 = 72 and 6x7 = 42

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I need help with this lol
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Answer:

75.2

Step-by-step explanation:

16 x 9.4 = 150.4 / 2 = 75.2

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Which equation has the same solution as x – 14x + 20 = 3?
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Answer:

x=17

Step-by-step explanation:

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