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d1i1m1o1n [39]
3 years ago
11

(21-4i)-(16-7i)+28i in standard form

Mathematics
1 answer:
lara [203]3 years ago
4 0
Your answer in standard form would be 5+31i
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Solve (-5/2)x ‐ 5 = -55
Dmitry_Shevchenko [17]

Answer: 5

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Elisa needs 40 shirts for a charity. One store is selling shirts for $6.95 each. Another store says that the total for al 40 shi
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zubka84 [21]

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Find the solution to the system of equations -3x-9y=18 4x+3y=12
chubhunter [2.5K]

Answer:

(6,-4)

Step-by-step explanation:

-3x-9y = 18 (equation 1)

4x+3y = 12 (equation 2)

multiply equation 2 by 3, and add it to equation 2

-3x-9y = 18

12x+9y = 36

-----------------

X's cancel out

9x = 54

Divide both sides by 9

x = 6

Plug in 6 for x in any of the original equations

(Plugging into Equation 2)

4(6)+3y = 12       Multiply 4(6)

24+3y = 12         Subtract 24 from both sides

3y = -12              Divide 3 on both sides

y = -4

Therefore the solution is (6,-4).

6 0
3 years ago
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