4 years ago

Find Surface Area Using a Formula 15.1, 25.5, and 35.7

Mathematics

1 answer:

Inessa [10]4 years ago

8 0

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Complete the square to make a perfect square trinomial. Then, write the result as a binomial squared. n^2+5/2n

Sergeeva-Olga [200]

Answer: $\bigg(n+\dfrac{5}{4}\bigg)^2$

<u>Step-by-step explanation:</u>

$n^2+\dfrac{5}{2}n+\underline{\qquad}\\\\\\n^2+\dfrac{5}{2}n+\bigg(\dfrac{5}{2\cdot 2}\bigg)^2\\\\\\n^2+\dfrac{5}{2}n+\bigg(\dfrac{5}{4}\bigg)^2\\\\\\=\bigg(n+\dfrac{5}{4}\bigg)^2$

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4 years ago

Multi step equations

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Answer:

Step-by-step explanation:

1) -28r +14=-12r-2

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~~~~~~~~~~~~~~~~

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3 years ago

(14x^2-41x+15) divided by (7x-3) dividing polynomials

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Step-by-step explanation: just did it

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(2x2 – 18)(x+3)(2 – 3) = 2x4 – 36x2 + 162

lubasha [3.4K]

Answer:

X=4

Step-by-step explanation:

I'm took lazy to explain it step by step sorry, but I'm positive that's the correct answer.

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3 years ago

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The time to assemble the first unit on a production line is 8 hours. The learning rate is 0.81. Approximately how long will it t

pochemuha

Answer:

4.428 hours

Step-by-step explanation:

If the learning rate is 0.81, the slope of the learning curve is:

$b=\frac{ln(0.81)}{ln(2)} \\b=-0.304$

The time it takes to produce the n-th unit is:

$T_n=T_1*n^b$

If T1 = 8 hours, the time required to produce the seventh unit will be:

$T_n=8*7^{-0.304}\\T_n=4.428\ hours$

It will take roughly 4.428 hours.

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4 years ago