Answer:
13 + 3i
Step-by-step explanation:
Given
(8 - i) + (5 + 4i) ← remove the parenthesis
= 8 - i + 5 + 4i ← collect like terms
= 13 + 3i
It may be easier to start from
.. a(x +3)(x -1) = 0
.. a(x^2 +2x -3) = 0
The quadratic
.. ax^2 +bx +c = 0 will have solutions -3 and 1 for ...
.. a ≠ 0
.. b = 2a
.. c = -3a
Complete question is;
The lengths of two sides of a right triangle ABC are given.
Find the length of the missing side.
b = 16 ft and c = 30 ft
Answer:
25.377 ft
Step-by-step explanation:
From online sources, c is the hypotenuse of the triangle.
Thus, we can use pythagoras theorem to solve for the other side of the right angle triangle.
c² = a² + b²
Where a is the length of the missing side.
Thus;
30² = a² + 16²
a² + 256 = 900
a² = 900 - 256
a² = 644
a = √644
a = 25.377 ft
You just add 42,000 and 3,433.52 to get the answer, which is, 45,433.52
Answer:
128.86cm squared
Step-by-step explanation:
The area of a circle is
π
r
2
πr
2
pi, r, squared.
π
×
1
cm
×
1
cm
=
1
π
cm
2
π×1cm×1cm=1πcm
2
Finally, subtract the area of the inner circle from the area of the outer rectangle.