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nasty-shy [4]
3 years ago
12

Solve the system of equations:

Mathematics
1 answer:
Ahat [919]3 years ago
8 0

Answer:

Step-by-step explanation:

z = 3

2y + z = 1

2y + 3 = 1        {substituting z =3}

2y = 1 -3

2y = -2

y = - 2/2

y = -1

2x +3y +2z = 13

2x + 3 * (-1) + 2*3 = 13      { {substituting z =3} and y = -1}

2x -3 + 6 =13

2x + 3 = 13

2x  = 13 - 3

2x= 10

x = 10/2

x = 5

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A concert hall seats 802 people in the balcony and 6887 on the main floor there were a concert in June and the ticket was sold f
tatuchka [14]

Answer: 7689 tickets

Step-by-step explanation:

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2 years ago
{20,1,6,10,11}<br> Find the subset and the proper subset.
liubo4ka [24]
With 5 elements in A={20,1,6,10,11}, there are 2^5=32 possible subsets, including
the null set, and A itself.
Any subset that is identical to A is NOT a proper subset.
Therefore there are 31 proper subsets, plus the subset {20,1,6,10,11}.

The subsets are:
null set  {} (has no elements) ........total 1
{20},{1},{6},{10},{11}.......................total 5
{20,1},{20,6}...{10,11}.....................total 10
{20,1,6},{20,1,10},...{6,10,11}.........total 10
{20,1,6,10}...{1,6,10,11}.................total 5
{20,1,6,10,11}.................................total 1
Altogether 32 subsets.


4 0
3 years ago
May I get help with this question?
irina1246 [14]

Answer:

C. <F

Step-by-step explanation:

The angle that sees the largest side length has the largest measurement.

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