Answer:
x=2, y=1. (2, 1).
Step-by-step explanation:
x=2y
2x+5y=9
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2(2y)+5y=9
4y+5y=9
9y=9
y=9/9
y=1
x=2(1)=2
Answer:
-25 is negative
25 is positive
Step-by-step explanation:
-25 is negative because it's 25 spaces to the left of 0
25 is positive because it's 25 spaces to the right of 0
|-25| = 25; The opposite of -25 is 25
The answer is 1/2, first put it as a fraction
0.5/1, then multiply by 10 until you get to a whole number.
do it for numerator and denominator.
0.5 * 10 = 5
1 * 10 = 10
5/10
simplify it then done
Answer:
See below.
Step-by-step explanation:
f(x + 3) = f(x) + f(5) (Given) so:
f(2 + 3) = f(2) + f(5)
and f(2) = f(2 + 3) - f(5)
= f(5) - f(5) = 0.
f(-1) = f(-1 +3) - f(5)
= f(2) - f(5)
= f(-3)
So - f(-1) = f(3)
Also:
f(5) = f(x + 3) - f(x)
= f(x + 3 - x)
= f(3).
But f(3) = -f(-1) ( shown above),
So f(5) = -f(-1).
I think you’re right but i’m not 100% sure
