Answer:
A
Step-by-step explanation:
Here, we want to find the value of ln (-7)
ln is same as Log to base e and mathematically , we have it for positive numbers only
For that of negative numbers, we get undefined results
However, by the use of special mathematical
methods, we have the answer for ln (-7) as;
1.94591015 + 3.14159265 i
As we can see, for the second part, the value for the coefficient of the complex number is pi and thus, we have the correct option as A
Answer:
18
Step-by-step explanation:
18x9/0-12.6 x 14 x 13.2 = 18
Week one:
36 * 6.70 = $241.20
Week two:
40 * 6.85 = $274
Subtract:
274 - 241.20 = $32.80
Therefore, he made $32.80 more the second week then he did the first week.
Best of Luck!
Answer:
{x,y,z} = {-18,4,2}
Step-by-step explanation:
Solve equation [2] for the variable x
x = -10y + 2z + 18
Plug this in for variable x in equation [1]
(-10y+2z+18) + 9y + z = 20
- y + 3z = 2
Plug this in for variable x in equation [3]
3•(-10y+2z+18) + 27y + 2z = 58
- 3y + 8z = 4
Solve equation [1] for the variable y
y = 3z - 2
Plug this in for variable y in equation [3]
- 3•(3z-2) + 8z = 4
- z = -2
Solve equation [3] for the variable z
z = 2
By now we know this much :
x = -10y+2z+18
y = 3z-2
z = 2
Use the z value to solve for y
y = 3(2)-2 = 4
Use the y and z values to solve for x
x = -10(4)+2(2)+18 = -18
