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Bumek [7]
3 years ago
9

the formula for the nth term of a sequence of numbers is 1/2n(n+1) the first term of this sequence is 1. Use the formula to writ

e down the next three terms of this sequence.

Mathematics
1 answer:
Afina-wow [57]3 years ago
5 0
1/2 * 1 * (1 + 1) = 1
1/2 * 2 * (2 + 1) = 3
1/2 * 3 * (3 + 1) = 6
1/2 * 4 * (4 + 1) = 10
Best answer me please!
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Jefferson works part time and earns 1520 in for weeks. How much does he earn each week
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4 years ago
Two less than three times the width of a rectangle is equal to the lenght.The area of the rectangle is 65 square ft.What is the
3241004551 [841]

Answer:

 length:  13 feet

Step-by-step explanation:

width:  x

length:  3x - 2

Area = Length * Width

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65 = 3x² - 2x

3x² - 2x - 65 = 0

(3x +  13)( x -  5) = 0

3x + 13 = 0       and     x - 5 = 0

3x = -13                             x = 5

x = - 13/3

**Width cannot be a negative number so we'll discard -13/3.

width:  x = 5

length:  3x - 2 = 3(5) - 2 = 13

7 0
3 years ago
Match the following.
Mnenie [13.5K]

Answer:

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Step-by-step explanation:

7 0
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RideAnS [48]
Hi,
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Hope this helps you.
6 0
3 years ago
A video game company is designing a game based on professional race cars. Professional race cars have a length of 570 cm and a w
siniylev [52]

Answer:

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Step-by-step explanation:

<u>Part A</u>

The actual car has a length to width ratio of ...

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The rectangle on the screen has a length to width ratio of ...

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Relative to its width, the screen rectangle is longer than necessary for a model of the car. So, the scale factor will be determined by the width of the car relative to the width of the screen model.

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<u>Part B</u>

For a model width of 3 cm, the scale factor is ...

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