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strojnjashka [21]
3 years ago
14

Add the following complex numbers:

Mathematics
2 answers:
Fittoniya [83]3 years ago
3 0

Answer:

option c

Step-by-step explanation:

(4 - 2i) + (12 + 7i)

multiply the brackets first

4 - 2i + 12 + 7i

combine like terms

16 + 5i

arlik [135]3 years ago
3 0

Answer:

O C. 16+5i

Step-by-step explanation:

=(4+12) + (7i-2i)

=16+5i

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Price __________ works because human minds assign disproportionate weight to the first information they receive when making deci
Burka [1]

Answer:

Anchoring

Step-by-step explanation:

Price anchoring is when potential buying rely on first price information about the commodity to buy. Price anchoring is used to create a price reference point when making decision as compare to old price. It also gives customers perception of future price.

7 0
4 years ago
How would u write 5 as a Roman numeral
Tamiku [17]

Answer:

V

Step-by-step explanation:

Five (5) in roman numerals would be V

3 0
2 years ago
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A certain company makes 12-volt car batteries. After many years of product testing, the company knows that the average life of a
Brrunno [24]

Answer:

A certain company makes 12-volt car batteries. After many years of product testing, the company knows that the average life of a battery is normally distributed, with a mean of 50 months and a standard deviation of 9 months. If the company does not want to make refunds for more than 10% of its batteries under the full-refund guarantee policy, for how long should the company guarantee the batteries?

The company should guarantee the batteries for 38 months.

Step-by-step explanation:

Using standard normal table,

P(Z < z) = 10%

=(Z < z) = 0.10

= P(Z <- 1.28 ) = 0.10

z = -1.28

Using z-score formula  

x = zσ  + μ

x = -1.28 *9+50

x = 38

Therefore, the company should guarantee the batteries for 38 months.

4 0
3 years ago
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dexar [7]

The last name I am pretty sure of it.

7 0
3 years ago
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Given f(x) = -5x + 1. What is f(-3)?
babunello [35]

Answer:

f(-3) =16

Step-by-step explanation:

f(x) = -5x + 1

f(-3) means let x=-3

Substituting x=-3 into the equation

f(-3) = -5 (-3) +1

Multiplying -5 and -3

f(-3) = 15+1

f(-3) =16

7 0
3 years ago
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