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3 years ago

2√180-14√20+10√45-√245

Mathematics

2 answers:

valkas [14]3 years ago

7 0

Answer:

$2 \sqrt{180 } - 14 \sqrt{20} + 10 \sqrt{45} - \sqrt{245} \\ 15.65$

Alisiya [41]3 years ago

3 0

I think the answer is 7root 5. I’m not entirely sure. The steps r below.

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Which fraction out of 5/8 and 7/11 is closest to 2/3?

Triss [41]

Well... hell, let's just convert them all with the same denominator then

hmmm let's see, we have the denominators of 8,11 and 3

so... we'll multiply the 5/8 times (11*3) or 33
and then we'll multiply 7/11 times (8*3) or 24
and then we'll multiply 2/3 times (8 * 11)

notice, we're simply using the other's denominator's product, to multiply the fractions... anyhow... let's check

$\bf \cfrac{5}{8}\cdot \cfrac{3\cdot 11}{3\cdot 11}\implies \cfrac{165}{264}
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\cfrac{7}{11}\cdot \cfrac{8\cdot 3}{8\cdot 3}\implies \cfrac{168}{264}
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\cfrac{2}{3}\cdot \cfrac{8\cdot 11}{8\cdot 11}\implies \cfrac{176}{264}\\\\
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\textit{now, which of }\cfrac{165}{264}\textit{ and }\cfrac{168}{264}\textit{ is closest to }\cfrac{176}{264}\quad ?$

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3 years ago

If f(x)=3<img src="https://tex.z-dn.net/?f=x%5E%7B2%7D" id="TexFormula1" title="x^{2}" alt="x^{2}" align="absmiddle" class="late

Anvisha [2.4K]

Answer:

$\sf f(-3) = 23$

<u>given:</u>

$\sf f(x) = 3x^2 -4$

to find the output, replace x with the given integer.

solve:

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$\sf f(-3) = 3(9) -4$

$\sf f(-3) = 27 -4$

$\sf f(-3) = 23$

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2 years ago

Please help!!<br> Will mark brainliest

Evgesh-ka [11]

Y=-2x+4.

-2 being m or the slope which you can count on the line -2/1
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How do I completely factor 4x^2-64?

Salsk061 [2.6K]

4x^2 - 64

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Classify -55 rational , whole or integer pls

Softa [21]

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3 years ago

2√180-14√20+10√45-√245​

2√180-14√20+10√45-√245