Lydia graphed δdef at the coordinates d (−2, −1), e (−2, 2), and f (0, 0). she thinks δdef is a right triangle. is lydia's assertion correct?
yes; the slopes of segment ef and segment df are opposite reciprocals.
yes; the slopes of segment ef and segment df are the same.
no; the slopes of segment ef and segment df are not opposite reciprocals.
no; the slopes of segment ef. and segment df are not the same.

No; the slopes of segment EF and segment DF are not opposite reciprocals.

Step-by-step explanation:

we have that

The coordinates of triangle DEF are

D (−2, −1), E (−2, 2), and F (0, 0)

we know that

If two lines are perpendicular, then their slopes are opposite reciprocal (the product of their slopes is equal to -1)

The formula to calculate the slope between two points is equal to

step 1

Find the slope EF

we have

E (−2, 2), F (0, 0)

substitute in the formula

step 2

Find the slope DF

we have

D(−2, −1), F (0, 0)

substitute in the formula

step 3

Find the slope DE

we have

D (−2, −1), E (−2, 2)

substitute in the formula

 > is undefined (is a vertical line)

step 4

Compare the slopes

The slopes of segment EF and segment DF are not opposite reciprocal, triangle DEF is not a right triangle

step-by-step explanation:

ok one would be money, and the other would be refreshments or something similar. if each bag of popcorn is 5.00 and each drink is half of that that means drinks are 2.50 the proper way to do that would to look and see how much of each you can buy without exceeding a limit of 30.00

13

step-by-step explanation:

divide the cost of the total of sodas you bought by the cost of one soda, for example:

$24.57 divided by $1.89 is 13 which means you bought 13 sodas