After a reflection of the figure, the image vertices are a'(5, 1), b'(3, –1), and c'(7, –1). what is the line of reflection?
the graph with x-coordinate marks -4, 0, 4 and y-coordinate mark -4, -1, 0, and 4. the triangle abc with coordinates a at (-1, 1), b at (1, -1), c at (-3, -1).
a. y = 2
b. x = 2
c. y = –x
d. y = 2x

answer:   rotate 270° clockwise about (7, 1) and reflect across the line x = 7

step-by-step explanation:

because i took test

d. 24+-0.114

step-by-step explanation:

the question requires us to calculate the approximate 95% confidence interval for the mean number of ounces of ketchup per bottle in the sample given the following statistics;

sample mean = 24

standard deviation, σ = 0.4

sample size , n = 49

the confidence interval for a population mean is calculated using the formula;

sample mean ± z-score*(σ/sqrt(n))

the z-score associated with a 95% confidence interval, from the standard normal tables, is;

1.96

substituting these values into the formula;

24 ± 1.96*(0.4/7)

= 24 ± 0.112

from the alternatives given, choice d is closest to the above expression;

1

x = 1

step-by-step explanation:

0 ÷ x = 0

0 ÷ 1 = 0

you can use a^2+ b^2=c^2