3 years ago

Ind the area of a equilateral triangle (regular 3-gon) with the given measurement 6-in side. A=sq. In.

1 answer:

8 0

Can u be more detailed please??

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-Dominant- [34]

18 because they need to be identical and you only have 18 chocolate bars

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3 years ago

Nataly_w [17]

Answer:

/2 and /4 because angle 1 is 90

7 0

3 years ago

Svetach [21]

Cos(angle) = Adjacent Leg / Hypotenuse

cos(35) = 9 / x

x = 9 / cos(35)

x = 10.99

Rounded to nearest tenth = 11.0

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3 years ago

blondinia [14]

The Answer is $9.00 because if you just add 4.50 to 4.50 it is $9:00.

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3 years ago

dimulka [17.4K]

Answer:

$\left[\begin{array}{cccc}-12&-13&13&|15\\7&-10&-3&|11\\7&14&5&\:\:\:|-5\end{array}\right]$

Step-by-step explanation:

The system of equations is;

-12x-13y +13z =15

7x-10y-3z = 11

7x+14y +5z = -5

The coefficient matrix is $\left[\begin{array}{ccc}-12&-13&13\\7&-10&-3\\7&14&5\end{array}\right]$

The constant matrix is $\left[\begin{array}{c}15\\11\\-5\end{array}\right]$

The augmented matrix is $\left[\begin{array}{cccc}-12&-13&13&|15\\7&-10&-3&|11\\7&14&5&\:\:\:|-5\end{array}\right]$

4 0

3 years ago