In order for two linear lines to be perpendicular, the product of their gradient must be -1.

Let's take y = x + b and y = -x + b
This is already in the form: y = mx + b, where m is 1 and -1 respectively.
Since the product of their gradient is -1, they are said to be perpendicular.

7 0

3 years ago

T-shirts are sold in packages of 4.The store’s 139 employees will each be given 5 t-shirts. How many packages will the store nee

Novosadov [1.4K]

Answer:

174 packages of t-shirts PLEASE GIVE BRAINLIEST

Step-by-step explanation:

139 x 5 = 695 t-shirts are needed

695 ÷ 4 = 173.75

Since you have to purchase whole packages of t-shirts you will need to buy 174 packages of t-shirts. 174 x 4 = 696 t-shirts

174 packages

8 0

3 years ago