Not sure about 1 and 8, I think there trapezoids but not sure.
2 is a square
3 is a rectangle
4 and 10 are a rhombus
5 and 11 are parallelograms
6 is a kite
7 is a square
can't really see 9
can't really see 12
Hope that helped.
<u>Answer:</u>
<em>First Equation → </em><u><em>y = 21/4</em></u>
<em>Second Equation → </em><u><em>x = -1/57</em></u>
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<u>Explanation:</u>
<em>solving equation #1</em>
<em></em>
step 1 - simplify
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step 3 - multiply each side of the equation by six
step 4 - add three to both sides of the equation.
step 5 - add three y to both sides of the equation.
step 6 - simplify
step 7 - divide both sides of the equation by four
Therefore, the solution to the first given equation is <u><em>y = 21/4 </em></u><em>or y = 5.25.</em>
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<em>solving equation #2</em>
<em />
step 1 - simplify.
step 2 - multiply each side of the equation by five.
step 3 - subtract twenty x from each side of the equation.
step 4 - divide each side of the equation by negative nineteen.
step 5 - switch
Therefore, the solution to the second equation is <em><u>x = -1/57.</u></em>
Answer:
The area needed to be painted is approximately 301.44 square inches.
Step-by-step explanation:
The shape of a donut is represented by two concentrical circles, whose area is described by the following formula:
(Eq. 1)
Where:
- Total area of the donut, measured in squared inches.
- Area of the greater circle, measured in square inches.
- Area of the lesser circle, measured in square inches.
By using the definition of the area of the circle, we expand the equation above:
(Eq. 1b)
If we know that , and , the area needed to be painted is:
The area needed to be painted is approximately 301.44 square inches.