Answer:
20 dollars
Step-by-step explanation:
Your teacher assigned 20 homework problems. You completed 5 on Monday and 10 more on Tuesday. What fraction of the 20 problems did you complete?
15/20
<h2><u>Q</u><u>u</u><u>e</u><u>s</u><u>t</u><u>i</u><u>o</u><u>n</u>:-</h2>
The perimeter of a square is 52 m. What is the area of the square ?
<h2><u>S</u><u>o</u><u>l</u><u>u</u><u>t</u><u>i</u><u>o</u><u>n</u>:-</h2>
Perimeter of a square = 52 m
4 × side = 52
side =
side = 13
So, area of square = (side)² = (13)² = 169 sq m.
<h3>The area of the square is <u>1</u><u>6</u><u>9</u><u> </u><u>s</u><u>q</u><u> </u><u>m</u>. [Answer]</h3>
A^2 -b^2 / a +b
Apply the difference of two squares formula to the top :
A^2 - b^2 = (a+b)(a-b)
now you have :
(A+b)(a-b) / a+b = 12
the two (a+ b)’s cancel each other out so you are left with a-b = 12
answer: a-b = 12