From a shipment of 400 light-bulbs, a sample of 80 was selected at random and tested. If 32 light-bulbs in the sample were found
1 answer:
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Answer:
See explanation
Step-by-step explanation:
First, convert this to standard form. By completing the square, you can do the following:
This is a circle with center (-1,-2), and radius 7. It looks like the one I graphed below. Hope this helps!
Clarified version: (3•2)9-8=100
Answer:
x = k - 3
Step-by-step explanation:
Given parameters:
Gradient of the line = 5;
Coordinates; M(x, 8)
N(k, 23)
Solution:
If we use the expression for finding the slope of the line, we can solve this problem;
Slope =
where
x₁ = x y₁ = 8
x₂ = k y₂ = 23
Input the parameters:
5 =
15 = 5(k - x)
3= k- x
k - x = 3
Express x in terms of k;
-x = 3 - k
Multiply through by -1;
x = -3 + k
x = k - 3