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Liula [17]
3 years ago
7

What is the rate of change I don't understand this

Mathematics
1 answer:
Gekata [30.6K]3 years ago
3 0
Change<span> in one variable relative to a corresponding</span>change<span> in another; graphically, the </span>rate of change<span> is represented by the slope of a line.</span>
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Hich equation is true when the value of x is 8?
USPshnik [31]

No equation is true when the value of x is 8

Step-by-step explanation:

The equation is true if the left hand side is equal to the right

hand side, to prove that

  • Write the left hand side
  • Substitute the value of x
  • Find the value of the left hand side (L.H.S)
  • If the answer equal the value in the right hand side (R.H.S then the equation is true at this value of x

A.

∵ 6x - 20 = 32

∴ L.H.S = 6x - 20

∵ x = 8

∴ L.H.S = 6(8) - 20 = 48 - 20 = 28

∵ R.H.S = 32

∴ L.H.S ≠ R.H.S

∴ The equation is not true when x = 8

B.

∵ 16 - \frac{1}{8} x = 12

∴ L.H.S = 16 - \frac{1}{8} x

∵ x = 8

∴ L.H.S = 16 - \frac{1}{8} (8) = 16 - 1 = 15

∵ R.H.S = 12

∴ L.H.S ≠ R.H.S

∴ The equation is not true when x = 8

C.

∵ 20 - 0.4x = 13.8

∴ L.H.S = 20 - 0.4x

∵ x = 8

∴ L.H.S = 20 - 0.4(8) = 20 - 3.2 = 16.8

∵ R.H.S = 13.8

∴ L.H.S ≠ R.H.S

∴ The equation is not true when x = 8

D.

∵ \frac{1}{5} x + 12 = 30

∴ L.H.S = \frac{1}{5} x + 12

∵ x = 8

∴ L.H.S = \frac{1}{5} (8) + 12 = \frac{8}{5} + 12 = 13.6

∵ R.H.S = 30

∴ L.H.S ≠ R.H.S

∴ The equation is not true when x = 8

No equation is true when the value of x is 8

Learn more:

You can learn more about the equations in brainly.com/question/2386054

#LearnwithBrainly

6 0
3 years ago
Tommy can ride his bicycle 4.5 miles in 15 minutes how many miles can he ride in 75 minutes
emmainna [20.7K]
4.5 miles * 5 = 22.5 miles
6 0
3 years ago
Read 2 more answers
Al has twice as many cards as Bob, and Jane has three times as many cards as Bob. Together, they have 372 cards. How many cards
Musya8 [376]

Answer: Bob has 62 cards.

All has 124 cards.

Jane has 186 cards

Step-by-step explanation:

Let x represent the number of cards that Bob has.

Al has twice as many cards as Bob. It means that the number of cards that All has is 2x.

Jane has three times as many cards as Bob. It means that the number of cards that Jane has is 3x.

Together, they have 372 cards. It means that

x + 2x + 3x = 372

6x = 372

x = 372/6

x = 62

The number of cards that Al has is

2 × 62 = 124

The number of cards that Jane has is

3 × 62 = 186

8 0
3 years ago
Marla draws a diagonal in a rhombus to form two triangles. What term can she use to classify each triangle?
Scilla [17]

Answer:

C

Step-by-step explanation:

7 0
3 years ago
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Plzzzz guys help :( Which of the following is the mid point of the line segment with endpoints -3 and 2 (a)5/2 (b) 1 (c) -1/2 (d
Monica [59]

Answer:

<u>C</u> -1/2

Step-by-step explanation:

midpoint = sum of end points divide by 2.

here, midpoint = (-3+2)/2

=(-1/2)

4 0
3 years ago
Read 2 more answers
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