Answer:
The right answer is : f(-4)=5
Answer:
The option A) -4-3i is correct
Therefore the simplified given expression is (-1-6i)+(-3+3i)=-4-3i
Step-by-step explanation:
Given that the expression is (-1-6i)+(-3+3i)
To simplify the given expression as below :
(-1-6i)+(-3+3i)=-1-6i-3+3i
=(-1-3)+(-6i+3i) ( combining the real parts and imaginary parts separately and adding the like terms )
=-4+(-3i)
=-4-3i
(-1-6i)+(-3+3i)=-4-3i
Therefore the simplified given expression is (-1-6i)+(-3+3i)=-4-3i
Therefore the option A) -4-3i is correct
Answer:
(1, 1 )
Step-by-step explanation:
Given the 2 equations
2x + 3y = 5 → (1)
7x - 5y = 2 → (2)
Multiplying (1) by 5 and (2) by 3 and adding will eliminate the y- term
10x + 15y = 25 → (3)
21x - 15y = 6 → (4)
Add (3) and (4) term by term to eliminate y
31x = 31 ( divide both sides by 31 )
x = 1
Substitute x = 1 into either of the 2 equations and evaluate for y
Substituting into (1)
2(1) + 3y = 5
2 + 3y = 5 ( subtract 2 from both sides )
3y = 3 ( divide both sides by 3 )
y = 1
Solution is (1, 1 )
$18.00 if you move the decimal one place to the left 10% tip would be $1.80,
multiply $1.80 x 2 = $3.60 which is 20% for the tip.
$18.00 + $3.60 = $21.60 divide by 4 people = $5.40 per person
