The numbers are complex numbers, and the sum of the complex numbers (-4 +i) and (10 - 5i) is 6 - 4i
<h3>How to evaluate the sum?</h3>
The expressions are given as:
(-4 +i) and (10 - 5i)
The sum is represented as:
Sum = (-4 +i) + (10 - 5i)
Open the brackets
Sum = -4 +i + 10 - 5i
Collect like terms
Sum = -4 + 10 +i - 5i
Evaluate the like terms
Sum = 6 - 4i
Hence, the sum of the complex numbers (-4 +i) and (10 - 5i) is 6 - 4i
Read more about complex numbers at:
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To find out the number of real solutions, we use something called "the discriminant". This is usually given the symbol "<span>Δ", pronounced "delta"
</span><span> Δ = b^2 - 4ac, where a is the x^2 coefficient, b is the x coefficient and c is the integer
</span>
When Δ = 0, there is one real solution, when Δ < 0, there are no real solutions, and when Δ > 0, there are 2 real solutions
So, substituting the values in, we get:
Δ = (20)^2 - 4(-4)(-25) = 0
Therefore, there is one real solution to the polynomial given.
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Answer:
The total frequency of deaths is 97,118.
Step-by-step explanation:
The total frequency is found by summing up the frequency of 2006, 2007, 2008 and 2009:
frequency = 6,605 + 702 + 88,011 + 1,790
frequency = 97,118.
When its to the negative power, you have to find the reciprocol in order to remove the negative exponent. so e^-3, which is equivilant to e^-3/1, is equal to 1/e^3. Then divide and the answer is 0.049
Answer:
? = 58°
Step-by-step explanation:
Angles subtended by tangents and radii of a circle are supplementary, so
? + 122° = 180° ( subtract 122° from both sides )
? = 58°