Select the pair of slopes that are the slopes of perpendicular lines.

1/2 and 2

3/4 and -4/3

-2/5 and -5/2

2 and 2

Solution:

We know that,

Product of slope of a line and slope of line perpendicular to it is always equal to -1

Option 1

Thus, these are not the slopes of perpendicular lines

Option 2

This option satisfies the slopes of perpendicular lines

Option 3

Thus, these are not the slopes of perpendicular lines

Option 4

2 and 2

Product = 2 x 2 = 4

Thus, these are not the slopes of perpendicular lines

step-by-step explanation:

so first find out how much each is worth.

quarter= 25 cents

dime= 10 cents

pennies= 1 cent

then multiply each by how much each is worth.

200                     150                   300

x                         x                     x   1

  25                       10              

                                  300

1000                     1500

+                          

4000                                      

5000                                  

then count 2 from the back and add a period.

$50.00

$15.00

$3.00

and then add them

  $50.00

+

  $15.00

+

    $3.00

$68.00

so sunghee has $68.00

read more on -

i think it's ф or x=6,-6

step-by-step explanation:

-x^2=-36

x^2=-36

ф

or

if you mean by : -(x^2)=-36

it'll be: x^2=36

x=6,x=-6

hope it'll ! have a good day!

you for asking!