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Mekhanik [1.2K]
3 years ago
8

Simplify the expression.

Mathematics
1 answer:
aniked [119]3 years ago
3 0
C should be the answer
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Donte simplified the expression below.
sergij07 [2.7K]
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>
6 0
3 years ago
Read 2 more answers
Marcus earned $54,000 last year when the Social Security tax was 6.2% of income up to $94,200. His Medicare tax was 1.45%. How m
AysviL [449]

Answer

Social security tax amount = $3348

Medicare tax amount = $743

Step by step explanation

The amount earned by Marcus = $54000

Social security tax = 6.2% = 6.2/100 = 0.062

Social security tax amount = 54000*0.062

Social security tax amount = $3348

Medicare tax = 1.45% = 1.45/100 = 0.0145

Medicare tax amount = 54000*0.0145

Medicare tax amount = $743

Hope this will help you.

6 0
3 years ago
Read 2 more answers
Do it quickly please for brainliest
Murrr4er [49]

Answer:

x = 98/17 = 5.765

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
FInd the general term of this sequence without using recurrency.<br><br> d = (2,6,14,30...)
Rufina [12.5K]
Y = (2)^(n+1) - 2

is the general term for this.
5 0
3 years ago
Read 2 more answers
Estimate 0.52 + 1.2 and explain how you made your estimate. Please hurry this is due soon!!
Alex777 [14]

Answer:

1.72

Step-by-step explanation:

0.52 plus 1.2 is equal to 1.72

8 0
2 years ago
Read 2 more answers
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