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OLga [1]
3 years ago
14

What is the additive inverse of the complex number 9 – 4i?

Mathematics
1 answer:
stiks02 [169]3 years ago
8 0

Answer:-(9 - 4i) =

Step-by-step explanation:

Given the complex number 9 - 4i, the additive inverse is the number that when added to the original number, would equate to zero. Another term this may be known as is the additive identity. The additive inverse is simply:

(a + bi) = -(a + bi)

Given: 9 - 4i

-(9 - 4i) = -9 + 4i

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A group of seven musicians includes three violinists and four harpists. An instructor randomly selects one of the musicians to p
katrin2010 [14]

Answer:

They are dependent events. Event A is choosing one musician while Event B is choosing another musician. THey are ALL musicians, no matter what instrument they play, we just know that there are 7 musicians in total. Therefore, the events are dependent because after choosing one musician, you would have 6 musicians left, instead of 7.

Step-by-step explanation:

3 0
2 years ago
You open a bank account with $100 and deposit 15 every week. Create an equation to model the total amount of money,y, in dollars
Charra [1.4K]

Answer:

Y = 15x+ 100

x = 10 months

Step-by-step explanation:

Given:

Initial deposit = $100

Weakly deposit = $15

Solution:

We need to create an equation where total amount is y is equal to initial deposit plus multiplication of weakly deposit and month x, so the equation is written as.

Y = 15x+ 100 ---------(1)

Where:

Y = Total amount

x = Number of months.

Second thing we need to find the month for y = $250

Now, we substitute y = 250 in equation 1.

250 = 15x+ 100

15x=250-100

15x =150

x=\frac{150}{15}

x = 10 months

Therefore, we need to required 10 months for $250.

4 0
3 years ago
In a box of 25 switches, 3 are defective. what is the probability of randomly selecting a switch that is not defective? enter yo
sergey [27]
Not defective : 25 - 3 = 22
probability of not defective : 22/25

22/25 × 100% = 88%
5 0
3 years ago
What is the answer to |-2|+|-3|
Nastasia [14]

Answer:

5

Step-by-step explanation:

the absolute value of -2 is 2

the absolute value of -3 is 3.

Since the question is adding the absolute values, the answer is 5

7 0
2 years ago
-5(4+2x)-14x simplify the expression
siniylev [52]

Answer:

− 20 − 24 x

Step-by-step explanation:

simplify

6 0
2 years ago
Read 2 more answers
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