Answer:
The perimeter before is 5+4+5+4=18.
After doubling the length, we do 10+4+10+4=28.
The difference is 10, so the perimeter increases by 10.
Divide 20 by 100 whixh equals .2, that gives us 1%. Now do .2×20 to get 20%. so 20% of 20 is 4, meaning 4 shirts are medium sized.
15 minutes= 2 problems
75 / 15 = 5
2 x 5 = 10 problems
Answer: 14x^2-93xy+60y^2 Hope that helps!
Step-by-step explanation:
1. Expand by distributing terms
(20x-12y)(x-4y)-(3x-4y)(2x+3y)
2. Use the Foil method:(a+b)(c+d)= ac+ad+bc+bd
20x^2-80xy-12yx+48y^2-(3x-4y)(2x+3y)
3. Use the Foil method : (a+b)(c+d)= ac+ad+bc+bd
20x^2-80xy-12yx+48y^2-(6x^2+9xy-8yx-12y^2)
4. Remove parentheses 20x^2-80xy-12yx+48y^2-6x^2-9xy+ 8yx+12y^2
5. Collect like terms (20x^2-6x^2)+(-80xy-12xy-9xy+8xy)+(48y^2+12y^2)
6. Simplify.
And your answer would be 14x^2-93xy+60y^2
Any fraction that is greatwer than 1/1 in simplest form
