Answer: X=7 y=0
Step-by-step explanation:
first transfer the -6y over than multiply it by 2 so the x's are equal then subtract the bottom equation from top equation and you get y = 0 then solve each equation with y = 0 and you get x = 7
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Answer:
72
Step-by-step explanation:
To calculate how much 20% of 360 makes we multiply 360 with 20 then divide it with 100
360 × 20 ÷ 100 = 72
Answer:
Area
Step-by-step explanation:
If you are paving the parking lot, you would need every sqaure inch of the parking lot, not only the outside (which is what the perimeter is)
Answer:
See explanation below
Step-by-step explanation:
To prove by contradiction, we are going to assume that a and b are odd.
If a and b are odd, then there exists integers j, k > 0 such that
a = 2j + 1 and b= 2k + 1
We're going to rewrite the original expression substituting a and b by their odd expression.
Now we have to cases, c is even or c is odd.
Case 1: If c is odd.
If c is odd, then c² is also odd, but we have that the expression above is even. Therefore, this is a contradiction.
Case 2: If c is even.
If c is even then it's multiple of 2, and c² is multiple of 4, but the expression above is not multiple of 4 (because it has the form 4g + 2). Therefore we have a contradiction.
Thus, a or b must be even.
7/8 is more than 8/10 so it would be >