<span>if you have 21 bins then the 'middle bin' is bin 11 (starting at 1)
So the 'mean' of this distribution is 11.
The SD is 3
so using the above calculator (or your own tables ) you get that the probability of a ball being in bin 7 or less is .091
A is you answer
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Answers:
- Pyramid
- Rectangular Prism
- Cylinder
- Cone
- Triangular Prism
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Explanation:
- The formula for the volume of a pyramid is (1/3)*B*h, where B is the area of the base. If we're dealing with a rectangular pyramid, like those found in Egypt, then the area of the base is B = length*width.
- The volume for a prism is found by multiplying length (L), width (W), and height (H). So V = LWH. Think of having a 2 by 3 rectangle of blocks. We would have 2*3 = 6 blocks in total. Then if we have 5 layers of these stacked then we have 2*3*5 = 6*5 = 30 blocks in total. This is one way to visualize how the volume formula works.
- To get the volume of a cylinder, we multiply the area of the base (pi*r^2) by the height (h). So that's where pi*r^2*h comes from.
- The volume of a cone is 1/3 that of a cylinder's volume. This is when the cone and cylinder have the same radius, and also the same height. It's not required that r = h.
- Since all of the other answer choices are used up, the only thing left is "triangular prism". It's strongly implied here that B is the area of the triangular base. Though the formula Bh applies to any prism and it doesn't have to be a triangular prism. Note how B = LW, so Bh is the same as LWH, meaning that a rectangular prism can use the Bh formula.
Answer:
C. 15
Step-by-step explanation:
The following proportional can be set-up for the figure given:
Solve for x
Cross multiply
15 = 6x - 5x
15 = x
x = 15
Answer:
A = 588 in^2
Step-by-step explanation:
"a" is actually the sign for Pi, which is a set ratio of 3.14159.
The instructions say to use just 3 for Pi in this question though.
A = (3)14^2)
A = (3)(14)(14)
A = 588 in^2
it shows them a different perspective
