X + y = 10
y = x + 2
so sub in x + 2 for y back into the first equation
x + y = 10
x + x + 2 = 10
2x + 2 = 10
2x = 10 - 2
2x = 8
x = 8/2
x = 4
y = x + 2
y = 4 + 2
y = 6
solution is : (4,6)
A^2 + b^2 = c^2
a = 9
b = 12
Then calculate for c
Answer:
The number is x-6
Step-by-step explanation:
difference of x and a number is 6
Difference means subtract, is means equals
x-n = 6
Add n to each side
x-n+n = 6+n
x = n+6
Subtract 6 from each side
x-6 = n+6-6
x-6 =n
The number is x-6
F(x) = xe⁻ˣ
f(x)' = x* -e⁻ˣ + e⁻ˣ
f(x)' = 0 => x = 1
f(1) = 1/e = 0.368