(5x – 4y) (7x2 – 12x + 27)

Mathematics

1 answer:

inysia [295]3 years ago

4 0

Answer:

205x-60x^2-164y+48xy

Step-by-step explanation:

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When taking a 17 question multiple choice test, where each question has 3 possible answers, it would be unusual to get or more q

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2 years ago

Sum n=3 ^ infty (2n+5)<br>find the series shown

Margarita [4]

<h3>Answer: Choice C) 11 + 13 + 15 + 17 + ...</h3>

=====================================================

Explanation:

We're adding terms in the form (2n+5)

The first term is when n = 3, so

2n+5 = 2*3+5 = 6+5 = 11

The next term is when n = 4, so

2n+5 = 2*4+5 = 8+5 = 13

The next term is when n = 5, so

2n+5 = 2*5+5 = 10+5 = 15

And so on

This means,

$\displaystyle \sum_{n=3}^{\infty} (2n+5) = 11+13+15+17+\ldots$

which matches with choice C. The three dots indicates the pattern goes on forever.

-------------------

Choice B does not have these dots, so that's why choice B is not the answer. If we replaced the infinity symbol with 7, then choice B would be the answer.

I.e,

$\displaystyle \sum_{n=3}^{7} (2n+5) = 11+13+15+17+19$

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4 years ago

A water tanker filled up to 2/3 of its height is moving with a uniform speed. On certain application of the great, the water in

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3 years ago

Find the real number root of 4 square root of 0.0081

kupik [55]

4(square root of 0.0081)
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4 years ago

A cylinder has a base diameter of 16cm and a height of 19cm. What is its volume in cubic cm, to the nearest tenths place?

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