Answer:
Only the second equation is an identity
Step-by-step explanation:

<u>Note that </u>

<u>You can confirm it: </u>

<u>Therefore</u>



<h2>
It is not an Identity</h2>
<u>Let's the second one</u>

In this case, we already performed the calculations, so it is true. It is an Identity.
Answer:
The number is 5.
Step-by-step explanation:
Call the number n. Write the problem as an equation:

The number is 5.
Answer:
You will need 3 cups peanut butter to make 36 dogs treats.
Peanut butter Cup : The dog treats made = 1: 12
Step-by-step explanation:
12 dog treats = 1 cup
So, by UNITARY METHOD
1 dog treat = (1/12) cup
So, 36 dog treats = 36 x (1/12) cup = 3 cups
So, you will need 3 cups peanut butter to make 36 dogs treats.
If 1 cup = 12 Dog Treats
then 1 x 3 cup = 12 x 3 dog treats
or, 3 Cups = 36 dog treats
The ratio of the Peanut butter cup : The dog treats made = 1: 12