Answer:
Step-by-step explanation:
a = - 4
b = 10
c = - 8
The discriminate is
D = b^2 - 4ac
D = 10^2 - 4*(-4)(-8)
D = 100 - 128
D = - 28 which is not a nice number
Because the Discriminate has a minus result, there are no real zeros.
The expression (-2 - 6i)-(-2-4i) to a + bi form is 0 - 2i.
Complete question.
Simplify the expression to a + bi form:
(-2 - 6i)-(-2-4i)
Square root of any negative number are expressed as a complex number. For example i = √-1
Complex numbers are generally written in the format z = x+iy
Given the expression (-2 - 6i)-(-2-4i)), in expansion:
(-2 - 6i)-(-2-4i)
= -2 - 6i + 2+4i
Collect the like terms
= (-2 + 2) - 6i + 4i
= 0 - 2i
Therefore the expression (-2 - 6i)-(-2-4i) to a + bi form is 0 - 2i.
Learn more on complex number here: brainly.com/question/12375854
Answer:
874.6
Step-by-step explanation
Profit = Sales - Costs
Profits by day:
Mon:
225 - (225*0.12) -9 = 189.0
Tue
260 - (260*0.12) -9 = 219.9
Wed
230 - (230*0.12)-9 = 193.4
Thu
180 - (180*0.12) - 9 = 149.4
Fri
150 - (150*0.12) -9 = 123.0
Total:
189+219.9+193.4+149.4+123 = 874.6
Answer:
7x8
Step-by-step explanation:
none of those seem right
Answer:
Step-by-step explanation:
Simplify:
Move 5c to the other side:
Divide bother sides with AC:
Simplify:
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