(°C*1,8)+32
(25*1,8)+32 = 45+32 = 77°F
Answer:
159 degrees
Step-by-step explanation:
If the entire line is 180 degrees then it is just,
180 - 21 = 159
<h3>
Answer: 2072.4 square cm</h3>
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Explanation:
If you used scissors to cut a vertical slice down the lampshade, then it can be unrolled to form a rectangle.
The horizontal portion of this rectangle is the distance around the circle, which is the perimeter of the circle, or the circumference. That's C = 2pi*r. Check out the diagram below to see what I mean.
The diagram shows that the diameter is 20 cm, so the radius is half that at 20/2 = 10 cm.
The circumference is C = 2*pi*r = 2*pi*10 = 20pi cm exactly
The height of the rectangle is the height of the cylinder, which is h = 30 as shown in the diagram.
The area of the rectangle is length*height = (20pi)*(30) = 600pi square cm exactly.
If we were to use something like pi = 3.14, then its approximate area is 600*pi = 600*3.14 = 1884 square cm
Let's bump this up by 10%. To do so, we'll multiply by 1.10
1.10*1884 = 2072.4
First way (no distribution)
-2(3z + 1) -10 = 4
-2(3z + 1) = 14
3z + 1 = -7
3z = -8
z = -8/3
Second way (with distribution)
-2(3z) - 2(1) - 10 = 4
-6z - 2 - 10 = 4
-6z = 16
z = 16/-6 = -8/3
z = 26/-6