Answer:
A) 2341 square units
Step-by-step explanation:
Area of a regular polygon= 1/2*perimeter*apothem
Perimeter=22*8=176 units
Apothem=26.6 units
Thus:
A=1/2*176*26.6
A=88*26.6
A=2340.8
So the area of the regular octagon rounded to the nearest square unit is 2341 units^2, aka. Option A
Step 1: Simplify both sides of the equation.
<span><span>5x+1</span>=<span>3x+5
</span></span>Step 2: Subtract 3x from both sides.
<span><span><span><span>5x</span>+1</span>−<span>3x</span></span>=<span><span><span>3x</span>+5</span>−<span>3x
</span></span></span><span><span><span>2x</span>+1</span>=<span>5
</span></span>Step 3: Subtract 1 from both sides.
<span><span><span>2x+1</span>−1</span>=5−1</span><span>2x=4
</span>Step 4: Divide both sides by 2.
<span><span>2x2</span>=<span>42
Answer:</span></span>x=2
B. If ur finding the slope...
Are u?
Answer:
Since m<BCA=m<CAB=55°, it follows that |AB|=|AC|, this means triangle ABC is isosceles.
Step-by-step explanation:
In the diagram AB is parallel to DC.
This means that, by the alternate interior angles theorem?
![\angle \: CAB = 55 \degree](https://tex.z-dn.net/?f=%20%5Cangle%20%5C%3A%20CAB%20%3D%2055%20%5Cdegree)
Also the sum of angles in a triangle should be 180° .
![m \angle \: BCA = 55 \degree + 70 \degree = 180 \degree](https://tex.z-dn.net/?f=m%20%5Cangle%20%5C%3A%20BCA%20%3D%20%2055%20%5Cdegree%20%2B%2070%20%5Cdegree%20%3D%20180%20%5Cdegree)
![m \angle \: BCA = 180 - 55 - 70 = 55 \degree](https://tex.z-dn.net/?f=m%20%5Cangle%20%5C%3A%20BCA%20%3D%20%20180%20-%2055%20-%2070%20%3D%2055%20%20%5Cdegree)
Since m<BCA=m<CAB=55°, it follows that |AB|=|AC|
Hence triangle ABC is isosceles.