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seropon [69]
2 years ago
14

SUBTRACT: (6x3 - 7x2) - (- 7x4 + 7x3 + 8x2)

Mathematics
1 answer:
RSB [31]2 years ago
5 0

Answer:

-5

Step-by-step explanation:

“x” would be multiplication, right?

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Savatey [412]

Answer:

3 inches

Step-by-step explanation: An equilateral triangle means all 3 sides are the same length.

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7 0
3 years ago
What number must you add to complete the square x^-8x=39
notsponge [240]

Answer:

Given equation: x^2-8x =39

when we complete the square , we take half of the value of 8 , then square it, and added to the left sides, we get;

x^2-8x+4^2 = 39 +4^2

∵8 is the value (\frac{8}{2})^2

Notice that, we add this both sides so that it maintains the equality.

then;

x^2-8x+4^2 = 39 +4^2

(x-4)^2 = 39 + 16   [ (a-b)^2 = a^2-2ab+b^2 ]

Simplify:

(x-4)^2 =55

The number must be added to complete the square is, 4^2 = 16



3 0
3 years ago
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If he has 6 friends they will all get 8 cards
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