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ale4655 [162]
2 years ago
10

Gieo 120 hạt giống của một loại cây thấy có 15 hạt nảy mầm. Với độ tin cậy 95% hãy tìm ước lượng khoảng cho tỷ lệ nảy mầm của lo

ại hạt giống đó.
Mn giúp mình với ạ
Mathematics
1 answer:
rosijanka [135]2 years ago
6 0

Answer:

sorry can't understand the language

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Write an equation of the line that passes through (2,-4) and (0,4)
LenKa [72]

Answer:

step 1. y - y1 = m(x - x1). this is the equation given a point and a slope.

step 2. find the slope m. m = (y2 - y1)/(x2 - x1) = (4 - (-4))/(0 - 2) = 8/-2 = -4.

step 3. y - (-4) = -4(x - 2) ; y + 4 = -4x + 8.

step 4. y = -4x + 4.

7 0
2 years ago
If y varies directly as x, and y=-4 when x=8, find y when x=3
enot [183]

I believe it would be negative 9 because your subtracting by twelve again. I hope that helped

3 0
3 years ago
The perimeter of a square is 18 2.<br> Determine the length of the diagonal.
Natalija [7]
The diagonal of the square is 9.1?
5 0
3 years ago
What is the solution to w-11=1.3
trapecia [35]
<span>Simplifying w + -11 = 1.3
 
Reorder the terms: -11 + w = 1.3
 
Solving -11 + w = 1.3
 
Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '11' to each side of the equation. -11 + 11 + w = 1.3 + 11
 
Combine like terms: -11 + 11 = 0 0 + w = 1.3 + 11 w = 1.3 + 11
 
Combine like terms: 1.3 + 11 = 12.3 w = 12.3
 
Simplifying w = 12.3 <--- (Answer)

Happy studying ^-^</span>
7 0
3 years ago
Read 2 more answers
Nelson purchased a 3 pound bunch
sveticcg [70]

Step-by-step explanation:

you would do 3 ÷ .99 and then when you get the answer from that you would multiply it by 5.

8 0
3 years ago
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