Leora is finding the length of a horizontal line segment on a coordinate grid. she subtracted the x coordinates and got –17.5. what is her next step?

add 17.5.

take the absolute value of –17.5.

add the y-coordinate values.

round up to –17.

Option B. Take the absolute value of -17.5.

Step-by-step explanation:

Leora is finding the length of a horizontal line segment on a coordinate grid.

Let the end points of the line segment be (0,x) and (0,-x)

So distance between them will be either [ x- (-x) ] = 2x

or [-x -x] = (-2x)

In both the cases length of line segment should be 2x, which is theabsolute value of -2x.

Similarly in this question Leora got the subtracted value as (-17.5).

Therefore next step will be to take the absolute value of (-17.5)

Option (B) is the answer.

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;

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step-by-step explanation: