Answer:
The solutions are x = 3, y=10 and x=7, y=30.
Step-by-step explanation:
We use substitution to solve this:
5x - y = 5
y = 5x - 5
Now substitute for y in the second equation:
2y - x^2 = 11 Replace y by 5x - 5:-
2(5x - 5) - x^2 = 11
10x - 10 - x^2 = 11
x^2 - 10x + 21 = 0
(x - 3)(x - 7) = 0
x = 3 , 7.
Now we find the values of y corresponding to these 2 values of x:
When x = 3 ( using y = 5x - 5):
y = 5*3-5 = 10 and
when x = 7
y = 5*7 - 5 = 30.
Answer:
<h2>3/6 is the same as 9/18.</h2>
Answer: 
Step-by-step explanation:
<u>Given function</u>
f(x + 1) = x + 2
<u>Isolate [ x + 1 ] on the right-hand side</u>
f(x + 1) = x + 1 + 1
f(x + 1) = (x + 1) + 1
<u />
<u>Substitute [ x + 1 ] with x</u>
f(x) = x + 1
<u>Substitute [ x ] with [ x - 1 ]</u>
f(x - 1) = (x - 1) + 1
Hope this helps!! :)
Please let me know if you have any questions
Answer is choice C) cosine is even; sine is odd
The properties that come with even and odd functions are...
f(-x) = f(x) indicates we have an even function. So cos(-x) = cos(x)
f(-x) = -f(x) indicates we have an odd function. So sin(-x) = -sin(x)
note: the end result of the proof will lead to cos(A)cos(B)+sin(A)sin(B)
