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ad-work [718]
3 years ago
7

Solve the system using substitution: y + 8x = 10 and 2y - 4x = 40

Mathematics
1 answer:
exis [7]3 years ago
4 0

Answer:

Hence x = -1 and y = 18

<em></em>

Step-by-step explanation:

Given the system of equations

y + 8x = 10... 1

2y - 4x = 40 ... 2

From 1; y = 10-8x

Substitute into 2;

2(10-8x) - 4x = 40

20 - 16x - 4x = 40

20 - 20x = 40

-20x = 40 - 20

-20x = 20

x = -1

Recall that y = 10-8x

y = 10 - 8(-1)

y = 10 + 8

y = 18

Hence x = -1 and y = 18

<em></em>

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Multiply. Express your answer in standard form. (3−4i)(5+6i)
jeyben [28]

Answer:

Input:

(3 - 4 i) (5 + 6 i)

Result:

39 - 2 i

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Position in the complex plane:

Position in the complex plane

Minimal polynomial:

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ANSWER IS 39-2i

Step-by-step explanation:

4 0
3 years ago
PLEASE HELP ASAP WILL GIVE BRAINLIEST TO WHOEVER ANSWERS FIRST!!!Solve the system of equations.
topjm [15]

Answer:

D. no solution

Step-by-step explanation:

substitute y = 2x + 3 in

2y = 4x + 10

gives 2(2x+3) = 4x + 10

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5 0
3 years ago
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aliina [53]

Answer:

43

Step-by-step explanation:

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4 0
3 years ago
Ok, now i need help from 1-5, 20 points
ratelena [41]

1 = 8

2=3+8

3=12

4=9

8 that's it bra



5 0
4 years ago
What is the slope of y=-4x-3
yKpoI14uk [10]

Answer:

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7 0
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