How many roots do the following equations have? -12x2 - 25x + 5 + x3 = 0
2 answers:
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Answer: The standard error of the sample mean = 0.44
Step-by-step explanation:
Standard error of the sample mean = <em> , where </em>
= population standard deviation , n= sample size.
Given : n= 45 , grams
The e standard error of the sample mean
Hence, the standard error of the sample mean = 0.44
The correct match of each tile of the equation with its solution is:
- n - 13 = - 12 →→→ 1
- n/5 = -1/5 →→→ -1
- n + 15 = - 10 →→→ -25
To match each tile to the correct box, we have to solve the arithmetic operations in the box, then drag the correct tile that matches our answer into the box.
From the image attached below;
1.
n - 13 = - 12
Let us add (+13) to both sides to eliminate (-13), i.e.
n - 13 + 13 = - 12 + 13
n = 1
2.
n/5 = -1/5
multiply both side by 5
n/5 × (5) = -1/5 × (5)
n = -1
3.
n + 15 = - 10
n +15 - 15 = - 10 - 15
n = -25
Learn more about matching each tile to the correct box here:
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