(x+y)+(x-y)i=7+3i
x+y =7
x-y =3
add these two equations together
x+y =7
x-y =3
------------------
2x = 10
divide by 2
x=5
x+y = 7
5+y =7
subtract 5 from each side
y =2
Answer: x=5
y=2
Answer:
A and B are independent events.
P(A) = 0.30. P
Answer:
48 months
Step-by-step explanation:
Cost of car = RM12,750
interest charged = 4% = 0.04
total interest paid = RM1,041.25
Now,
Using the Constant Ratio formula
r = 
here,
i is the interest paid
P is the principle
n is the number of monthly installments
r is the interest rate
on substituting the respective values, we get
0.04 = 
or
n + 1 = 49
or
n = 48 months
The volume of premium antifreeze to be used is 60 gallons.
The volume of water to be used is 120 gallons
<h3>What is a percentage?</h3>
The percentage is calculated by dividing the required value by the total value and multiplying by 100.
Example:
Required percentage value = a
total value = b
Percentage = a/b x 100
Let the volume of 60% pure antifreeze be used to make 20% pure antifreeze.
= x gallons
The volume of 20% pure antifreeze = 180 gallons
For 60% pure antifreeze:
C₁ = 60% , V₁ = x gallons
For 20% pure antifreeze :
C₂ = 20% , V₂ = 180 gallons
Applying,
C₁V₁ = C₂V₂
60 × x = 20 × 180
x = 60 gallons
The volume of 60% pure antifreeze used = 60 gallons.
The volume of water to be used.
= 180 - 60 gallons
= 120 gallons
Thus,
The volume of premium antifreeze to be used is 60 gallons.
The volume of water to be used is 120 gallons
Learn more about percentages here:
brainly.com/question/11403063
#SPJ1
Answer:
<h2>Q1. d. 5(x - 4)(x - 6)</h2><h2>Q2. b. (8x - 1)(8x + 1)</h2>
Step-by-step explanation:
