Answer:
<u>The two numbers are 25 and 15.</u>
Step-by-step explanation:
Let's find out the two numbers, this way:
x = first number
y = second number
This is the equations system:
x + y = 40
x - y = 10
Solving for x in the first equation:
x + y = 40
x = 40 - y
Solving for y in the second equation:
40 - y - y = 10
40 - 2y = 10
-2y = 10 - 40
-2y = - 30
<u>y = -30/-2 = 15</u>
Solving for x:
x + y = 40
x + 15 = 40
x = 40 - 15
<u>x = 25</u>
<u>The two numbers are 25 and 15.</u>
Answer:
I believe it's Side-Angle-Side
They're vertical angles, they share the R
Answer:
81.6814 ft
Step-by-step explanation:
Answer:
3
Step-by-step explanation:
I hope this helps you out!
Proving a statement by contrapositive means that if you want to prove that 
, you can instead prove that 
since the two are equivalent.
So, proving that 
by contrapositive means to prove that
since of course the negation of being odd is being even.
This claim is quite easy to prove: if n is even, then it is twice some other integer k: 
This means that its square is 
And so, if n is even, its square is also even. This proves, by contrapositive, that if n squared is odd, then n is odd.
