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Vitek1552 [10]
4 years ago
10

Which set or sets does the number 21 belong to

Mathematics
2 answers:
Mrac [35]4 years ago
4 0
The number 21 belongs to whole numbers, natural numbers, rational numbers, integers,counting numbers and real 
Mrac [35]4 years ago
4 0
21 Is a rational number counting number & natural number
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A college student completed some courses worth 4 credits and some courses worth 5 credits. The student earned a total of 74 cred
lutik1710 [3]

Answer:

4x+5y=74

six 5 credit cources and 11 four credit cources

if u substitute in the value its correct

4(11)+5(6)= 44+30 which is 74

and 11 plus 6 is 17 cources so there you go!

7 0
3 years ago
PLS HELP FAST!!! A city's baseball team coach recorded the ages of the players on the team. The players' ages are: {12, 16, 15,
xxTIMURxx [149]

Answer:

the answer is 4!

Step-by-step explanation:

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2 years ago
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What is the surface area of a cone with a height of 15 and the diameter of 12?
V125BC [204]

Answer:

417.62

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6 0
3 years ago
A printer situated at point P is 5 feet from ad and 5 feet from DC plot point P on the coordinate plane and give the coordinates
Delvig [45]
Based on the graph, AD passes through -30 of the x - axis and DC passes through -15 of the y-axis.

These lines are the boundaries. Point P is located within said boundaries.

Since Point P is 5 feet from AD, it is in -25f the x-axis. 
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Thus, Point P has  the coordinates (-25,-10). It is located on the 3rd quadrant of the plane.
3 0
3 years ago
A lock on a fence door has a 4 digit combination. Each digit can be any number
Bas_tet [7]

Answer:

D. 9990 possible combinations

Step-by-step explanation:

The first digit has 10 choices (can be all of them), the second digit also has 10 choices. The third and fourth digits also have 10 choices.

Multiply them together you get 10*10*10*10 = 10000 possible combinations.

But since all 4 characters cannot be the same, we subtract 10 from 10000 (there are 10 combinations which the 4 characters are the same: 1111, 2222, 3333, 4444, 5555, 6666, 7777, 8888, 9999, and 0000) and we get 9990.

6 0
4 years ago
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