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mart [117]
3 years ago
7

216 diving students to 12 instructors

Mathematics
1 answer:
il63 [147K]3 years ago
6 0

Answer:

18

Step-by-step explanation:

216 divided by 12

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On the Venn diagram, which region(s) represent the union of Set A and Set B (A⋃B)?
slega [8]
The set A U B is represented by shading both circles A and B (also the overlapping region as well). Any point in set A U B will be in either A, B or both. 
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3 years ago
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the second term of a geometric sequence is 18 and the fourth term is 8 find the common ratio . And find the sum of the first 6 t
777dan777 [17]

Answer:

  • ratio: 2/3
  • sum: 73 8/9

Step-by-step explanation:

The general term of a geometric sequence is ...

  an = a1·r^(n-1)

You have the 2nd and 4th terms, so ...

  a2 = a1·r^(2-1) = a1·r

  a4 = a1·r^(4-1) = a1·r^3

We can find r from the ratio ...

  a4/a2 = (a1·r^3)/(a1·r) = r^2 = 8/18 = 4/9

Then r is ...

  r = √(4/9) = 2/3 . . . . the common ratio

The first term is ...

  a2 = 18 = a1·(2/3)

  a1 = (3/2)·18 = 27

__

The sum of the first 6 terms is ...

  Sn = a1·(r^n -1)/(r -1)

  S6 = 27·((2/3)^6 -1)/(2/3 -1)

  S6 = 27·(64/729-1)/(2/3-1) = (27)(665)/243 = 73 8/9

The sum of the first 6 terms is 73 8/9.

_____

<em>Check on the sum</em>

The first 6 terms are ...

  27, 18, 12, 8, 5 1/3, 3 5/9

Their sum is 73 8/9, as above.

8 0
3 years ago
17. One day when Terry went to school the temperature outside was –15 degrees Fahrenheit. In Terry's classroom the temperature w
docker41 [41]
C.+83 degrees. 68-(-15)=+83
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3 years ago
Which is the largest number?<br> ОА. 1.9x 106<br> ОВ. 2.5 x 105<br> Ос. 8.7 x 102<br> OD. 5.8 x 103
DanielleElmas [232]
C. 8.7 x 102

8.7 x 102= 887.4
Which is the largest product out of all the other equations.

Hope this helps!
4 0
3 years ago
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Measure the screwdriver's length to the nearest tenth of a centimeter. Express the answer as a decimal.
Alja [10]

Answer:

17.1 cm

Step-by-step explanation:

A screw driver is a mechanical tool or device which is mainly used for screwing the screws and unscrewing them. It is also used for removing the nuts and bolts and also serves a variety of uses.

It is typically made of steel and has a handle and a shaft which ends as a tip.

In the context, the length of the screw driver from the given figure expressed to the nearest tenth of a centimeter is 17.1 cm.

It is also equivalent to $6\frac{3}{4}$ inch.

8 0
3 years ago
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