Answer:
A) -2 - i√3 , -2 + i√3
Step-by-step explanation:
Solve using quadratic formula
x² + 4x + 7 = 0
The Almighty Formula
= -b ± √b² - 4ac/2a
Where ax + bx² + c = 0
From the above question
a = 1, b = 4, c= 7
Hence,
-4 ± √4² - 4 × 1 × 7/2 × 1
-4 ± √16 - 28/2
=( -4 ± √-12)/2
Since
b² - 4ac < 0
We have two complex roots
Simplifying
( -4 ± √-12)/2
= -4/2 ± √-12/2
= -2 ± 2√3i/2
= -2 ± √3i
Therefore,
-2 - √3i , -2 + √3i
or
-2 - i√3 , -2 + i√3
Option A , is the correct answer
6 is the constant in that equation. The answer is 6 because it is the only number that is not attached to a variable.
Answer:
Step-by-step explanation:
Let us apply the distributive property to find an equivalent expression for:
For all real numbers a, b, and c, the distributive property says that:
We apply this property to get:
We simplify the RHS to get:
First we calculate surface of base.
10 * 6 = 60 feet^2
The Volume of pyramid is calculated by formula:
V = B*H/3
H- height of pyramid
B- surface of base of pyramid
We have both of those so all we have to do is to finish calculation:
V = 60*15/3 = 300 feet^3
Answer is 300 qubic feets
Answer:
none
Step-by-step explanation:
p=lw
24, not squared
if your are calculating the perimeter of area, then it would be squared
