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3 years ago

A sequence is defined by un=3n-2. find u27

1 answer:

8 0

I think the definition of your sequence is    u(n) = 3n - 2 .
That little set of parentheses makes it SO much
easier to read and understand.

To find u(any number) just write the number in place of 'n' .

u(27) = 3(27) - 2

   =   81 - 2

   = 79 .

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The sum of a number and its square is 90. Find the number.

oksano4ka [1.4K]

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3 years ago

Help me plz i need help

Oxana [17]

Answer:

y-2.0

x-2.3

Step-by-step explanation:

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2 years ago

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if i want the track to have a circumference of 400 feet what does the diameter of the track need to be?

natta225 [31]

Answer:

The diameter of the track needs to be 127.27 feet

Step-by-step explanation:

* Lets explain how to solve the problem

- The circumference of any circle is C = 2πr, where r is the radius

of the circle and π is the constant ratio between the

circumference and the diameter of the circle which

approximately is 22/7 or 3.14

- The diameter of any circle is twice its radius

* <u><em>Lets solve the problem</em></u>

- The circumference of the track is 400 feet

∵ The circumference = 2πr

∵ π = 22/7

∴ 400 = 2 × 22/7 × r

∴ 400 = 44/7 r

- Divide both sides by 44/7 to find r

∴ r = 63.63

∵ The diameter of the circle = 2r

∵ The radius = 63.63 feet

∴ The diameter = 63.63 × 2 = 127.27 feet

* The diameter of the track needs to be 127.27 feet

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3 years ago

. A teenager bought some vintage t-shirts online. The total cost, C, in dollars, of t-shirts, t, can be found by using the equat

Ray Of Light [21]

469=18.50t +25
444=18.50t
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3 years ago

Given (x - 7)2 = 36, select the values of x.<br> x = 13<br> x = 1<br> x = -29<br> x = 42

almond37 [142]

Answer:none of the above

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3 years ago

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