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2 years ago

Remove all perfect squares from inside the square root. √20 = urgent need help now first actual answer gets the thingy

Mathematics

2 answers:

Mariulka [41]2 years ago

4 0

Your answer is 2 root 5

xz_007 [3.2K]2 years ago

3 0

Answer:

$2\sqrt{5}$

Step-by-step explanation:

$\sqrt{20}$

20 can be written as a product of 4 and 5.

$\sqrt{4 \times 5}$

4 is a perfect square.

$\sqrt{4} \times \sqrt{5}$

Square root of 4 is 2.

$2 \times \sqrt{5}$

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Drag and drop the constant of proportionality into the box to match the table.

NemiM [27]

Answer: it is NOT proportional

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2 years ago

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We want to find the maximum and minimum values of f(x, y) = 10x2 + 11y on the disk D: x2 + y2 < 1.

dolphi86 [110]

If you're just focusing on the boundary, it's the circle $x^2+y^2=1$ . Parameterize it by taking $x=\cos t$ and $y=\sin t$ , with $0\le t\le2\pi$ . Then $f(x,y)$ reduces to a univariate function $g(t)$ :

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Then you can find any extrema on the boundary by checking the critical points of $g$ .

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3 years ago

Jacob multiplied 30 by 0.25 and got 7.5. Zane said that it was wrong because when you multiply two numbers the product is always

stich3 [128]

Answer:

Jacob, when you multiply a whole number by a decimal you get a number smaller than the whole number you started off with.

Step-by-step explanation:

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2 years ago

James spent $(2y2 + 6). He bought notebooks that each cost $(y2 − 1).

CaHeK987 [17]

The expression to find the number of notebooks James bought would be written as:

Number of notebooks = total spent / cost per item

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If y = 3, then the number of notebooks bought would be:

Number of notebooks = (2y^2 + 6) / (y^2 − 1)
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2 years ago

It is estimated that 4,600 people, correct to the

Marina CMI [18]

Answer:

The minimum would be 4,500, and the maximum would be 4,700.

Step-by-step explanation:

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2 years ago