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e-lub [12.9K]
3 years ago
14

Please help me understand this step by step. FOR BRAINLIEST Evaluate x^2 + 2x - 4 if x= -4

Mathematics
2 answers:
Luda [366]3 years ago
8 0

Answer:

Step-by-step explani think its power 10 wizard cards

ation:

Rufina [12.5K]3 years ago
4 0

Answer:

Step-by-step explanation:

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1-5/7=2/7, 2/7:5:7= 2:5
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You select a marble without looking and then put it back. If you do this 3 times, what is the best prediction possible for the n
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2 years ago
The table shows the price for different numbers of board games:
zlopas [31]

Answer:

We conclude that the price is 3.5 times the number of board games.

Hence, option B is true.

Step-by-step explanation:

We know that when y varies directly with x, the equation is

y ∝ x

y = kx

k = y/x

where 'k' is called the proportionality constant.

From the table,

For the point (2, 7)

k = y/x

  = 7/2

  = 3.5

For the point (4, 14)

k = y/x

   = 14 / 4

   = 7/2

    = 3.5

For the point (5, 17.50)

k  = y/x

   = 17.5 / 5

   = 3.5

For the point (9, 31.50)

k  = y/x

   = 31.50 / 9

   = 3.5

From the above calculations, we computed that the value of the proportionality constant remains the same.

Thus, the table of numbers represents a proportional relationship.

Therefore, the equation becomes

y = kx

The price of 2 board game

y = 3.5 (2)

  = 7

The price of 4 board game

y = 3.5 (4)

  = 14

Therefore, we conclude that the price is 3.5 times the number of board games.

Hence, option B is true.

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3 years ago
Which graph best represents an equation with the values shown in the table?
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3 years ago
What is 22.2% written as a fraction in simplest form
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Proper fraction:
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Improper fraction:
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3 years ago
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