Answer: b, c and e.
Step-by-step explanation:
180° degree symmetry will mean that if we do a rotation of 180°, the figure will look exactly the same.
Now, let's suppose we have a figure with an odd number of sides.
We can draw that figure such that we have a side pointing down, and a vertex pointing up.
Now when we do a 180° rotation, the side will be pointing up and the vertex will be pointing down.
Then if the figure has an odd number of sides, it does not have a 180° rotational symmetry.
Now if the figure has an even number of sides, then we can do the same as above, but now we can put two parallel sides, one facing down and the other facing up, and when we do the rotation, we will end with the same image.
Then the correct options are the ones with an even number of sides:
b, c and e.
So you subtract 73.85 from 492.36.
Just check it on a calculator, 492.36 - 73.85 = 418.51
Wish I could help<span>What are the measures of the angles located at positions a, b, & c? Note: the figure is symmetrical on the vertical through angle b. <span>The large triangle is an isosceles triangle. The two angles on the base are equal.<span>Angle a = 35° </span></span><span><span>We now know two angles in the largest triangle. The third angle, angle b must add to these to make 180°. </span><span>35° + 35° + b = 180°b = 180° - 70°b = 110° </span></span><span><span>We now know two angles in a quadrilateral. The two unknown angles, including angle c are equal. All four angles add up to 360°. </span><span>2c + 110° + 120° = 360°2c = 360° - 230°2c = 130°c = 65°
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Answer:
Part A: w(t)=60-4t
Part B: w(15)=60-60=0
The cooler will be empty after 15 minutes.
Step-by-step explanation:
The answer is b y⁢ 2x+2
