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const2013 [10]
3 years ago
7

1(2) - (4 - 3 - 2/2)

Mathematics
1 answer:
kherson [118]3 years ago
6 0

Answer:12

Step-by-step explanation:

12 - (4 - 3 - 2/2)

12- (1 - 2/2)

12 - 0 = 12

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2 lines 3y-2x=21 and 4y+5x=5, intersect at the point Q. Find the coordinates of Q
erik [133]

Answer: (-3,5)

Step-by-Step Solution:

1. Set 1 equation equal to y

3y-2x=21

3y=2x+21

y=2/3x+7

2. Set the other equation equal to y

4y+5x=5

4y=-5x+5

y=-5/4x+5/4

3. Set the equations equal to each other, and solve for x

2/3x+7=-5/4x+5/4

2/3x+23/4=-5/4x

(Multiply by 12 on both sides to get rid of fractions)

8x+69=-15x

8x=-15x-69

23x=-69

x=-3

4. Solve for y

(Choose any of the equations)

y=2/3x+7

y=2/3(-3)+7

y=-2+7

y=5

ANSWER: (-3,5)

7 0
1 year ago
Help me with this problem please
icang [17]

Answer:

The answer is D.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Please help this is due soon
Harlamova29_29 [7]

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6 0
3 years ago
Expand the polynomial (x2 − y2)2 + (2xy)2, then simplify it by combining like terms.
Vlada [557]
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Which of the following is not a perfect square?<br> A. 50<br> B. 49<br> C. 121<br> D. 1
luda_lava [24]
50 is not a perfect square because it doesn’t have a square root.

Hope this helped :)
6 0
3 years ago
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