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gayaneshka [121]
3 years ago
5

Determine when the rational expression below is equal to zero ?

Mathematics
2 answers:
Airida [17]3 years ago
8 0
It would be negative
Damm [24]3 years ago
7 0

Answer:

Step-by-step explanation:

x-2=0

x=2

x+4=0

x=-4

at x=2,-4 rational expression =0

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-3x+4y=-4 -2x+5y=9<br>solve the following system of equations
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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

Số kết quả của việc chọn 0 quả bóng đỏ = 15C12

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

5 0
3 years ago
Solve for x.
lidiya [134]

Answer:

x = 1/4

Step-by-step explanation:

<u>Calculations:</u>

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4x=1

x=\frac{1}{4}

7 0
2 years ago
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