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Nonamiya [84]
3 years ago
5

Help me please !!

Mathematics
1 answer:
Levart [38]3 years ago
7 0

Answer:

69

Step-by-step explanation:

first 135

second 135 - 20% = 135 - 27 = 108

third 108 - 20% = 108 - 21.6 = 86.4

fourth 86.4 -20% = 86.4 -17.28= 69.12

rounded 69

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Find the nth term of this quadratic sequence 4 9 16 25 36
TEA [102]

Answer:

<h2>         aₙ = n² + 2n + 1</h2>

Step-by-step explanation:

a₁ = 4 = 2² = (1 + 1)²

a₂ = 9 = 3² = (2 + 1)²

a₃ = 16 = 4² = (3 + 1)²

a₄ = 25 = 5² = (4 + 1)²

a₅ = 36 = 6² = (5 + 1)²

Therefore:

               <u>aₙ = (n + 1)² = n² + 2n + 1</u>

3 0
3 years ago
Find the length of t​
Sergeu [11.5K]

Answer:

t = 12.3 cm

Step-by-step explanation:

hope it's helpful

5 0
3 years ago
a building is 750 feet high. suppose that a wire is attached to the top of the building and pulled tight. it is attached to the
Taya2010 [7]

Answer:

500

Step-by-step explanation:

750- 250

7 0
4 years ago
A hotel in Las Vegas, Nevada, is the largest pyramid in the United States. Prior to the construction of the building, the archit
Blizzard [7]
The volume of a square pyramid is:
V = (1/3) LxWxH

From the problem we know that:
H = L - 9 and
W = L

Substituting this to the formula of the volume to generate a polynomial function:
V = f(L) = (1/3) L x L x (L - 9)
Expanding:
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3 0
4 years ago
Read 2 more answers
(radical) √640 estimated to the nearest hundredth.
Ket [755]
------------------------------------------------------------------------
Radical Form
------------------------------------------------------------------------

\sqrt{640}  =  \sqrt{64 \times 10} &#10;

\sqrt{640}  =  \sqrt{64} \times  \sqrt{10} &#10;

\sqrt{640}  =  8  \sqrt{10}

------------------------------------------------------------------------
Decimal Form
------------------------------------------------------------------------

\sqrt{640} = 25.298

\sqrt{640} = 25.30

------------------------------------------------------------------------
Answer : √640 = 25.30 (nearest hundredth)
------------------------------------------------------------------------
7 0
4 years ago
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