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Alika [10]
3 years ago
12

Simplify the expression to a + bi form: (8 + 10i) - (9+9i)

Mathematics
2 answers:
wlad13 [49]3 years ago
8 0

Answer:

-1+i

Step-by-step explanation:

(8+10i)-(9+9i)

8+10i-9-9i

8-9+10i-9i

-1+10i-9i

-1+i

AlladinOne [14]3 years ago
7 0

Answer:

→(8 + 10i) - (9 + 9i) \\  = 8 + 10i - 9 - 9i \\  = 8 - 9 + 10i - 9i \\  =   \boxed{- 1 + i}✓

  • <u>- 1 + i</u> is the right answer.
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Solve using substitution x=(3y+1) and x+4y=15
natka813 [3]

The solution is: x= 7 and y = 2

Step-by-step explanation:

Given equations are:

x = 3y+1\ \ \ \ Eqn\ 1\\x+4y = 15\ \ \ \ Eqn\ 2

Putting x = 3y+1 in equation 2 from equation 1

3y+1+4y = 15\\7y+1 = 15\\

Subtracting 1 from both sides

7y+1-1 = 15-1\\7y = 14

Dividing both sides by 7

\frac{7y}{7} =\frac{14}{7}\\y = 2

Putting y=2 in equation 1

x = 3(2) +1\\x = 6+1\\x = 7

Hence,

The solution is: x= 7 and y = 2

Keywords: Linear equations, substitution method

Learn more about linear equations at:

  • brainly.com/question/4706270
  • brainly.com/question/4710621

#LearnwithBrainly

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3 years ago
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viktelen [127]

Answer:

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Hope This Helps!

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5 0
3 years ago
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Ludmilka [50]

Answer:

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or

(3,2) is your answer.

Step-by-step explanation:

2x +y = 8  (1)

y = - x+ 5  (2)

Put equation (2) into equation (1). Use the y value in (2) to go into the y value in (1).

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4 years ago
A store offers four different brands of a product. It decides to eliminate the
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Answer:

Brand D has the highest return rate so they should eliminate that one.

Step-by-step explanation:

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What is 1042 divided by 45?
Daniel [21]
1042 / 45 
=23.15

You should be able to do that with a calculator though.
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3 years ago
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