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adell [148]
3 years ago
15

Giovanni justifies whether the expression –4x – 8 is equivalent to Negative 2 (x + 1) minus 2 (x + 3) by letting x = 3 in both e

xpressions. What is the value of each expression when x = 3? 3 and –20 4 and 4 –20 and –20 3 and 4
Mathematics
2 answers:
Vladimir [108]3 years ago
6 0

Answer:

When x = 3, the solutions to the expressions are–20 and –20

Step-by-step explanation:

–4(3) – 8   Multiply

-12 - 8       Subtract

-20

-2(3 + 1) - 2(3 + 3)     Simplify in the parentheses

-2(4) - 2(6)                 Multiply

-8 - 12                        Subtract

-20

               

shutvik [7]3 years ago
4 0

Answer:

its C -20 and -20

Step-by-step explanation:

just did the quiz got 100%

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3 years ago
25x-5 but the expression as a product
Sever21 [200]

Answer:5(5x-1)

Step-by-step explanation: for a product the equation above

25x-5

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25/5=5

5/5=1

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4 years ago
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babymother [125]
The percentage drop would be 35%
6 0
3 years ago
If 32 teams participate in a standard single elimination tournament, how many games must be played to decide a champion?
SCORPION-xisa [38]
<h3>Answer: 31 games</h3>

======================================================

Explanation:

  • 32/2 = 16 games will happen in round 1. Afterward, 16 teams are left.
  • 16/2 = 8 games will happen in round 2. Afterward, 8 teams are left.
  • 8/2 = 4 games happen in round 3.
  • 4/2 = 2 games in round 4.
  • 2/2 = 1 game as the final championship.

Count the number of times you divide by two and we have five occurrences of this. So there five rounds overall.

To get the total number of games played, we add up the quotients

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

Or as a shortcut we can simply subtract off 1 since 1+2+4+...+2^n = 2^(n+1)-1

We can write that rule as

\displaystyle \sum_{k=1}^{n}2^k = 2^{n+1}-1

which is equivalent to

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nikdorinn [45]
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4. -x^2. Again, this would originally have both endpoints at positive y ∞ for positive and negative x ∞, but because of the negative sign, it is flipped to point towards negative y ∞.
3 0
3 years ago
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