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
Firdavs [7]
3 years ago
11

Donte simplified the expression below.

Mathematics
2 answers:
shepuryov [24]3 years ago
8 0
Based on the given solution above made by Donte, the mistake that he made is that h<span>e did not apply the distributive property correctly for 4(1 + 3i). The answer is option A. Here is why. If we simplify this, it would look like this:
</span><span>4(1 + 3i) – (8 – 5i) 
4+12i - 8 + 5i
17i-4
so, </span>4(1 + 3i) – (8 – 5i) should be equal to 17i - 4. 
Hope this is the answer that you are looking for. Have a great day!
sergij07 [2.7K]3 years ago
6 0
The answer is: [A]: He did not apply the distributive property correctly for                                        4(1 + 3i) .
_____________________________________________
Explanation:
______________________
Note the distributive property of multiplication:
_____________________________
a*(b+c) = ab + ac.
____________________________
As such: 4*(1 + 3i) = (4*1) + (4*3i) = 4 + 12i ;
_____________________________________
Instead, Donte somehow incorrectly calculated:
_____________________________________
4*(1 + 3i) = (4*1) + 3i = 4 + 31; (and did the rest of the problem correctly);

Note:  - (8 - 5i) = -8 + 5i (done correctly; 
___________________________________
So if Donte did not apply the distributive property correctly for 4*(1+3i)—and incorrect got 4 + 3i (as mentioned above); but did the rest of the problem correctly, he would have got:
_____________________________
4+ 3i - 8 + 5i = -4 + 8i (the incorrect answer as stated in our original problem.
__________________
This corresponds to: "Answer choice: [A]: <span>He did not apply the distributive property correctly for 4(1 + 3i)."
___________________________</span>
You might be interested in
What is the slope of the line that passes through the points (2, –3) and (–2, 5)? 2 1/2 -1/2 -2
sergij07 [2.7K]

Answer: The slope is  -2.

Step-by-step explanation:

(2,-3)

(-2,5)

Using the two given points,  you can find the slope by finding the difference in the y coordinates and diving it by the difference in the x coordinates.

y coordinates:  -3 - 5= -8

x coordinates;  2-(-2) = 4  

Slope:  -8/ 4 = -2  

5 0
3 years ago
D+(-9)=-5<br> i need to solve for d. thank u
goldfiish [28.3K]

Answer:

4

Step-by-step explanation:

d - 9 = -5

Add 9 to -5, and you will get 4.

4 - 9 = -5

8 0
2 years ago
Read 2 more answers
1/3 off the regular price of $51
jolli1 [7]

Answer:

34.00

Step-by-step explanation:

because get the discounted price, subtract the discount from the original price. To illustrate this principle, here is an example: to take 1/3 off $36.00, divide 36 by 3 and multiply by 1. This becomes 36/3 x 1 to equal 12, which represents a discount of $12.00

8 0
2 years ago
Find the missing length using the Pythangorean Theorem and round the answer to the nearest tenth if necessary​
UNO [17]
B=6 i believe! if you use the pythagorean theorem (a^2+b^2=c^2) then you should be able to turn 8^2 and 10^2 into 64 and 100, respectively. 100-64=36 and the square root of 36 is 6. you can plug it in by calculating 8^2 + 6^2, which equals 100! hope this wasn't too confusing XD
5 0
3 years ago
A rectangle has a length the area of the rectangle is 180(2w-9=180).Find the length and the width of the rectangle. Find the per
djverab [1.8K]
<span>A rectangle has a length the area of the rectangle is 180(2w-9=180).Find the length and the width of the rectangle. Find the perimeter of the rectangle</span>
5 0
3 years ago
Other questions:
  • I need help ASAP! Is it A,b,c, or d?
    15·1 answer
  • Find the value of x (2x) (5x +15)
    13·1 answer
  • Find mFE<br> A) 52°<br> C) 76°<br> B) 93°<br> D) 112°
    15·1 answer
  • I NEED HELP :( PLZ ASAP
    10·2 answers
  • What do the following two equations represent?
    14·1 answer
  • If(2x,x+y)=(y,9)find x and y.<br>​
    6·1 answer
  • I need help SOO bad Help me please!!!!!
    11·2 answers
  • 50 points!!! help fast! 50 points!!!
    6·2 answers
  • Home Schoology
    5·1 answer
  • How much must you deposit in an account to earn $400 per year at 2% simple interest?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!