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SIZIF [17.4K]
3 years ago
13

What does |-7|+5 equal too?

Mathematics
2 answers:
Alexeev081 [22]3 years ago
7 0

Whenever you see this " | | "  character, it means that whatever negative number in between those characters are always positive.

It converts -7 to just 7.  This makes the question 7+5.

Giving you the answer 12.

kozerog [31]3 years ago
4 0

Answer:

12 = x

Step-by-step explanation:

The | | mean absolute value.  Pretty much making every number within the sign a positive.

|-7| + 5 = x

7 + 5 = x

12 = x

Hope this helps.

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3 years ago
Hộp đựng 3 bi đỏ, 5 bi trắng và 7 bi xanh lấy ngẫu nhiên 2 bi. Tính xác suất? a, Có 1 bi đỏ trong 2 bi lấy ra b, Có ít nhất 1 bi
Vikentia [17]

Answer:

a) 3C1 * 12 C1 / 15 C2

b)  1 - 12C2 / 15C2

Step-by-step explanation:

Được

Viên bi đỏ = 3

Viên bi trắng = 5

Viên bi xanh = 7

Hai quả bóng được rút ra một cách ngẫu nhiên

a) Có 1 bi đỏ

3C1 * 12 C1 / 15 C2

b) Có ít nhất 1 viên bi đỏ trong số 2 viên lấy ra.

Số kết quả của việc chọn hai quả bóng trong số 15 quả bóng = 15 C2

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Xác suất chọn được ít nhất 1 viên bi đỏ = 1 - 12C2 / 15C2

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3 years ago
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