Answer:
B) 5x+15y=30
5x-5y=10
Step-by-step explanation:
First, we solve the top equations by addition. Multiply the first one by -4.
-4x-12y=-24
4x-8y=4
This equals -20y=-20, so y=1. Now we put that back into either equation and find that x=3. So the solution set is (3,1)
Plugging those into each of the possible choices, we find that the answer is
B) 5x+15y=30. 5(3)+15(1)=30 15+15=30. 30=30 CHECK
5x-5y=10 5(3)-5(1)=10. 15-5=10. 10=10. CHECK
Answer:
2.25
Step-by-step explanation:
area= length*width
length= 1.5
width= 1.5
1.5*1.5= 2.25
So, the answer is 2.25
1. Combine all of the like terms so that you can simplify it, if they are not combined already.
2. Drop all of the constants and coefficients, the constant terms are all of the terms that are not attached to the variable.
3. Put the term in decreasing order of their exponents.
4. Find the power o the largest term.
5. Identify the degree of the polynomial.
6. Know that the degree of a constant is zero.
Hope this helps!
Let, total number of T-shirts are x.
Number of blue T-shirts = (2/3)x = 2x/3 .
Number of blue shirts on sale = (3/5)(2x/3) = 2x/5 .
Number of medium sized blue shirts on sale = (1/5)(2x/5) = 2x/25 .
Fraction of the shop's T-shirts are blue T-shirts that are on sale and are size medium = 
= 2/25 . ( Number of medium sized blue shirts on sale divided by total number of T-shirts )
Hence, this is the required solution.
