Answer:
The domain of f(x) corresponds to the set of real numbers.
D f(x) ∈ ∀X; D f(x) ∈ R
Step-by-step explanation:
f(x)=X+18-3X-15
f(x)=-2X+3 (right line with negative slope)
This function exists for all values of X, so the domain corresponds to the set of real numbers.
D f(x) ∈ ∀X; D f(x) ∈ R
the answer is 0 its like 14-14=0
We have:
x - 3y = 4
Pass -3y to the second member of equation
x = 4 + 3y
Now replace on the other equation tge value of x
2x + y = 7
2.(4 + 3y) + y = 7
Do the diatributive
2 ×4 + 2×3y + y = 7
8 +6y+y = 7
8 + 7y = 7
7y = 7 - 8
7y = - 1
y = -1/7
Now replace y = -1/7 in any equation
x = 4 + 3y
x = 4 + 3 . -1/7
x = 4 -3/7
x = (4×7 -3)/7
x = 25/7
19•36=40x
684=40x
40x=684
X=17.1
Step-by-step explanation:
Probability that Dan chooses a Green card = 0.2
Probability that Esther chooses a Green card = 0.2 (same set of cards = same probability)
Since they are independent events,
total probability = 0.2 * 0.2 = 0.04.
