Answer:
The first answer ⇒ 3 + 3i
Step-by-step explanation:
∵ Z1 = -2 - 6i ⇒ red point
∵ Z2 = 5 + 9i ⇒ blue point
∴ Z = 3 + 3i ⇒ green point
The answer to this question would be: a^2 b^2
In this question, you have two variable ( a and b) with some exponent. To make the number express positive exponent, you can switch it location from denominator to numerator position, or vice versa. In this case, the calculation would be:
a^3 * b^-2 / a^1 b^-4=
a^3 * b^4 / a^1 b^2=
(a^3 / a^1) * (b^4/b^2)=
a^(3-1) * b^(4 -2)=
a^2 * b^ 2
Answer:
The present age of Mr. Lin's daughter = 8 years old.
The present age of Mr. Lin = 32 years old
Step-by-step explanation:
Let the present age of Mr. Lin's daughter = x yrs old
So, the present age of Mr. Lin = 4 times daughter's age = (4 x) yrs
Now, age of daughter after 4 years = (x + 4) yrs
and the age of Mr. Lin after 4 years= ( 4x + 4) years
Also, ( 4x + 4) = 3 times (x+4)
According to the question:
4x + 4 = 3(x+4)
or, 4x + 4 = 3x + 12
⇒ 4x - 3x = 12 -4
or, x = 8
Hence, the present age of Mr. Lin's daughter = 8 years old.
and the present age of Mr. Lin = 4 x = 4 x 8 = 32 years old
Answer:
x-intercept = 4
y-intercept = 2
Step-by-step explanation:
It is a combination, becasue the order does not matter
C (4,3) = 4! / [3! (4-3)!] = 4
Answer: A and C.