Step-by-step explanation:
here,
x1=-7
x2=13
y1=-2
y2=-23
so
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=
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=
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=
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=
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So,
the distance between (-7, -2) and (13,-23)=29
Answer:
p(x) = x^2 + 5x
Step-by-step explanation:
p(x) = (x+5) (x <====== something may be missing here?
p(x) = (x+5) (x Use distributive property to expand R side
p(x) = x^2 + 5x
Step-by-step explanation:
step 1. what is 4^2?
step 2. 16.
Complete Question
A set of magical wand prices are normally distributed with a mean of 50 dollars and a standard deviation of 4 dollars. A blackthorn wand has a price of 45.20. What proportion of wand prices are lower than the price of the blackthorn wand? You may round your answer to four decimal places
Answer:
0.1151
Step-by-step explanation:
We solve using z score formula
z = (x-μ)/σ, where
x is the raw score = $45.20
μ is the population mean = $50
σ is the population standard deviation = $4
We are solving for x < 45.20
Hence:
z = 45.20 - 50/4
z = -1.2
Probability value from Z-Table:
P(x<45.20) = 0.11507
Approximately to 4 decimal places = 0.1151
Therefore, the proportion of wand prices that are lower than the price of the blackthorn wand is 0.1151
26
r + 2r - 8 = 43
3r = 51
r = 17
g = 2r-8 = 34-8=26
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