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Kruka [31]
3 years ago
11

What are the solutions of the equation (2x + 3)+ 8(2x + 3) + 11 = 0? Use u substitution and the quadratic formula to

Mathematics
1 answer:
zavuch27 [327]3 years ago
5 0

Answer:

x=-7+/5 /2

Step-by-step explanation:

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9 -11 was a terrible tragedy
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Ravi purchased n notebooks. They were 5 dollars each. Write an equation to represent the total cost c that Ravi paid
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c = 5n

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8 0
3 years ago
Prove that: –7 is not the arithmetic square root of 49
frez [133]

Answer:

–7 is not the arithmetic square root of 49 only in case we are taking it for natural number.

Step-by-step explanation:

  • The square root of x is that number which on squaring gives the result as x.
  • For example, the square root of 4 is +2 or -2. Because on squaring +2 or -2 we get the number 4.
  • Similarly for the case of 49, the square root might be both +7 or -7.
  • But if we are taking it as a natural number then -7 is not valid. Like for length, quantity or other sort of things -7  is not the arithmetic square root of 49.
6 0
2 years ago
-3(_x + 4) = 9x – 12 Using the distributive property, what number would go in the blank in order for the given statement to be c
Licemer1 [7]

Answer:

-3(-3x + 4) = 9x - 12

Step-by-step explanation:

-3( Ax + 4) = 9x - 12

-3Ax -12 = 9x - 12

Equating coefficients of  x terms on both sides :

-3A = 9

A = -3

Therefore, -3(-3x + 4) = 9x - 12

4 0
3 years ago
Which of these is an example of typing at an average rate of 42 words per minute?
____ [38]

Answer:

Step-by-step explanation:

7 0
3 years ago
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