1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Mama L [17]
3 years ago
8

I=\sqrt{-1}i= −1 ​ i, equals, square root of, minus, 1, end square root, what is the sum (7+3i)+(-8+9i)(7+3i)+(−8+9i)left parent

hesis, 7, plus, 3, i, right parenthesis, plus, left parenthesis, minus, 8, plus, 9, i, right parenthesis?
Mathematics
1 answer:
nata0808 [166]3 years ago
4 0

We can simply add the expression to simplify the expression. So,

(7+3i)+(-8+9i) =7 +3i -8+9i Get rid of paranthesis.

=(7-8)+(3i+9i) Group the like terms.

= -1 + 12i

You might be interested in
Complete the table to represent how much each individual monthly deposit of $50 will be worth at the end of 12 months.
densk [106]
Hold on let me go do my research I’ll brb .
3 0
3 years ago
If your current examination mean is 97.2 and you receive a 99 on the next examination, what effect will this have?
mr Goodwill [35]

If you have an average of 97.2 on your current exam and you get a 99 on your next exam, your average will increase.

  • Mean in mathematics is the sum (total) of all the values in a set of data, such as numbers or measurements, divided by the total number of values.

  • To find the average, sum all the values ​​in the set. Then divide the total by the number of values.

We have the current examination mean, xold = 97.2

Now, we receive,  x = 99 on the next examination, the new mean will be:

xnew = (xold + x)/N

xnew = (97.2+99)/2

xnew = 196.2/2

xnew = 98.1  

The new average is 98.1

98.1 > 97.2

So if you score 99 on your next exam, your average will increase.

Learn more about mean here

brainly.com/question/1136789

#SPJ4

3 0
1 year ago
Read 2 more answers
PLEASE help with these math questions
kaheart [24]
1. C
2. A
3. D
4. 62/25
5. 4/33

By the way it is not fair. posting 5 sums for just 7 points. :)

anyway, if it helped u
do click thx.

3 0
3 years ago
What is the work to 5x=3x-6
Jlenok [28]
5x-3x=-6
2x=-6
x=-3
x equals -3 is the answer.
7 0
3 years ago
Find the missing length.<br> 10<br> 4<br> с<br> C=<br> ✓ [?]<br> Pythagorean Theorem: a2 + b2 = c2
Mazyrski [523]

Answer:

a2 (10x10) + b2 (4x4) = c2 (100+16)

Answer: √116

3 0
2 years ago
Read 2 more answers
Other questions:
  • On a game show, you get to throw a dart at a circle of radius 50 inches. If you miss, you get to throw again until you hit the c
    11·1 answer
  • A test has two multiple choice questions, each with five choices. What is the probability of guessing the correct answer to both
    13·1 answer
  • A figure drawn in the coordinate plane has the coordinates J(‒1,5), K(6,5), L(9,1) and M(2,1).
    8·2 answers
  • How you do you solve for it??
    8·1 answer
  • How to work out this problem?
    11·1 answer
  • HELP ASAP!!!!
    13·1 answer
  • If the radius of a coin is 20cm ,find its surface area.​
    15·1 answer
  • What is equivalent to 5(9q + 7)​
    9·2 answers
  • 4X + 3x + 2(3 + 6). Simplify *<br>which one is the answer<br> 7 + 18 <br> 7X + 18 <br> 7X + 12​
    15·2 answers
  • Unit Test Review Active x 1 2 3 4 5 이 6 7 8 9 o 이 10 Which answer explains whether the table of values represents a function? Х
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!