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Andreyy89
3 years ago
13

1) Given the formula for the general term of an arithmetic sequence, determine t12.

Mathematics
1 answer:
o-na [289]3 years ago
8 0
It’s B hope this helps
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Probability: If you roll a regular 6-faced die 1200 times, about how many times would you expect to get a 4?​
just olya [345]

If you roll a six sided dice once, each outcome has a 1/6 probability.

This means 4 has a 1/6 probability.

If you roll a dice 1200 times....

1200 × 1/6 = 1200/6 = 200

You would expect to get a 4 200 times.

6 0
3 years ago
Read 2 more answers
Someone explain!! geometry
ikadub [295]

Step-by-step explanation:

sin 0 = opposite ÷ hypothenus

sin 0 = 3 / 5

3 / 5 = x / 15

5 × n = 15

n = 3

x = 3 × 3 = 9

y = use pythagoras

= 12

tan 0 = opposite ÷ adjacent

tan 0 = 9/12

4 0
3 years ago
find the volume of a solid that is generated by rotating around the indicated axis the plane region bounded by the giveb curves:
Fofino [41]
Assuming the area below the line y=0 (i.e. x>1) does NOT count, the area to be rotated is shown in the graph attached.

A. Again, using Pappus's theorem,
Area, A = (2/3)*1*(1-(-1))=4/3  (2/3 of the enclosing rectangle, or you can integrate)
Distance of centroid from axis of rotation, R = (2-0) = 2
Volume = 2 π RA = 2 π 2 * 4/3 = 16 π / 3 (approximately = 16.76 units)

B. By integration, using the washer method
Volume = 2\pi\int_{-1}^1(1-x^2)(2-x)dx
=2\pi\int_{-1}^1(x^3-2x^2-x+2)dx
=2\pi[x^4/4-2x^3/3-x^2/2+2x]_{-1}^{1}
=2\pi([1/4-2/3-1/2+2]-[1/4+2/3-1/2-2])
=2\pi(8/3)
= 16 π /3   as before



3 0
3 years ago
Which one of the following statements is true of perpendicular lines?
miv72 [106K]
A. Thay intersect at one point.
5 0
3 years ago
1/6 of 3 yards= --------feet is it 1 1/2 or 1/2 or 3 or 1/18
erica [24]
1/2 yards times ) is 3, so 1/2 would be the answer.
8 0
3 years ago
Read 2 more answers
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