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mina [271]
3 years ago
7

Simplify the expression to a + bi form: (-7 - 3i) + (-5 + 10i)

Mathematics
2 answers:
Harman [31]3 years ago
6 0

Answer:

-12+7i

Step-by-step explanation:

(-7-3i)+(-5+10i)

-7-3i-5+10i

-7-5-3i+10i

-12-3i+10i

-12+7i

Please mark me as Brainliest if you're satisfied with the answer.

nignag [31]3 years ago
6 0

Answer:

→( - 7 - 3i) +( -  5 + 10i) \\  =  - 7 - 3i - 5 + 10i \\  =  -  7 - 5 - 3i + 10i \\  =  \boxed{ - 12 + 7i}✓

  • -<u>12 + 7i</u> is the right answer.
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Please help, I don't understand.
galben [10]

Answer:

I think it's C. , but I'm not too sure . You should double check to see if it's correct.

4 0
3 years ago
Val rented a bicycle while she was on vacation. She paid a flat rental fee of f dollars, plus $8.50 each day. The total cost at
damaskus [11]

The question is incomplete. Here is the complete question:

Val rented a bicycle while she was on vacation. She paid a flat rental fee of f dollars, plus $8.50 each day. The total cost at the end of her vacation was t dollars. Let d represent the number of days Val rented the bicycle. Write an equation representing the total cost at the end of her vacation.

Answer:

t=f+8.5d

Step-by-step explanation:

Given:

Flat rental fee = f

Variable fee per day = $8.50

Total cost at the end vacation = t

Number of days of her vacation = d

Using unitary method, we can find the variable fee for 'd' days.

1 day variable fee = $8.50

Therefore, 'd' days variable fee = 8.50d

Total cost at the end of her vacation can be obtained by adding the fixed rental fee and the variable fee obtained for the given number of days.

Now, total cost is given as:

Total cost = Flat rental fee + Variable fee

Substituting all the variables and framing above in the form of an equation, we get:

t=f+8.5d

Therefore, the equation representing the total cost at the end of her vacation is t=f+8.5d

7 0
3 years ago
HELP QUICKLY PLEASE!! ​
docker41 [41]

Answer:

D

Step-by-step explanation:

Because the first equation is equivalent to 1, and d is equivalent to 1, the rest are incorrect

4 0
3 years ago
Solve for x<br><br> THANK YOU
Nadusha1986 [10]

Answer:

x=-31/18

Step-by-step explanation:

8 0
2 years ago
When Josh babysits, he chargers a flat fee of $14 plus an hourly rate of $9. How long would Josh need to babysit if he wants to
SpyIntel [72]

Answer:

\frac{36}{7}hours

Step-by-step explanation:

First let's get the flat fee of 14 out of the way, because he wants to earn 86 dollars and the 14 dollar fee is the y intercept.

86-14 = 72

We would then divide 72 by the slope (14 per hour) to see how many hours he has to work:

72/14 \approx5.14285714286

I would just simplify because this decimal isn't exact

72/14 = 36/7

So 36/7 hours

7 0
3 years ago
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