2 years ago

(3xy2x2y−3)2(9xy−3x3y2)−1.

Mathematics

1 answer:

Crank2 years ago

4 0

Answer:

-18x square y -+36xy square + 54 xy - 1

Step-by-step explanation:

collect the terms, calculate the product, collect the terms, then distribute

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Simplify the surd 3√ 20 +√ 45

melisa1 [442]

Answer:

9 $\sqrt{5}$

Step-by-step explanation:

Using the rule of radicals

$\sqrt{a}$ × $\sqrt{b}$ ⇔ $\sqrt{ab}$

Simplify the radicals

$\sqrt{20}$

= $\sqrt{4(5)}$

= $\sqrt{4}$ × $\sqrt{5}$

= 2 $\sqrt{5}$

$\sqrt{45}$

= $\sqrt{9(5)}$

= $\sqrt{9}$ × $\sqrt{5}$

= 3 $\sqrt{5}$

Then

3 $\sqrt{20}$ + $\sqrt{45}$

= 3(2 $\sqrt{5}$ ) + 3 $\sqrt{5}$

= 6 $\sqrt{5}$ + 3 $\sqrt{5}$

= 9 $\sqrt{5}$

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2 years ago

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Sebastian bought a 30-pack of mechanical pencils and plans to give the same number of pencils each to 6 friends.

Korolek [52]

Answer: 5 pack

Step-by-step explanation:

From the question, we are informed that Sebastian bought a 30-pack of mechanical pencils and plans to give his friends an equal number of pencils to the 6 friends.

Therefore, each friend will get:

= 30 / 6

= 5 packs

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2 years ago

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Find a better estimate of √2.

Goryan [66]

Answer = 1.414
I used the prime factorization method.
Hope this answers your question.

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11 months ago

2 5/6 - 11/4=?ggffcgyujjh

ElenaW [278]

1/12 I think I’m sorry if it isn’t

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Which of the following is a Riemann Sum used to estimate?

fgiga [73]

Answer:

A. Area under a curve

Step-by-step explanation:

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