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4 years ago

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A plane can fly 7 miles per minute. The plane will fly 8 trips, and each trip is 810 miles. How many hours will the plane fly? S

how your work to receive full credit. (10 points)

1 answer:

ELEN [110]4 years ago

4 0

7*60 = 420

810/420 = 1.9285

93- 100 = 53-60

subtract 40 from 93.

1.53*8 = 12.24

Answer: 12 hours and 24 Minutes

If this helps give a brainliest :)

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614 divided by 31 round it

ASHA 777 [7]

Answer:

Hi, I'm unsure as to what digit you wanted us to round the answer to, so I rounded the answer to the 4 most commonly used decimal places.

First off, we figure out that <em>614 divided by 31 equals </em><em><u>19.8064516129.</u></em>

Rounded to the nearest thousandth, that's <u><em>19.806.</em></u>

Rounded to the nearest hundredth, that's <u><em>19.81.</em></u>

Rounded to the nearest tenth, that's <u><em>19.8.</em></u>

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sladkih [1.3K]

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Step-by-step explanation: $d=-1\frac{1}{5}-(-2) =-1\frac{1}{5}+2=\frac{1}{5}$

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4 years ago

Solve x^2 4x − 12 = 0. x = 2, x = −6 x = −2, x = −6 x = 3, x = −4 x = −3, x = 4

Svetlanka [38]

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3 years ago

Find LCM of:<br><br>x2 - 9, 3x3 + 81

VikaD [51]

Answer:

$\boxed{\pink{\sf (x + 3) \ is\ the \ LCM . }}$

Step-by-step explanation:

Given two expressions ,

$\qquad (1)\: x^2 - 9 \\\\ \qquad (2)\:3x^3 + 81$

And , we need to find the LCM , that is lowest common factor . So , let's factorise them seperately .

<u>Factorising</u><u> </u><u>x²</u><u> </u><u>-</u><u> </u><u>9</u><u> </u><u>:</u><u>-</u><u> </u>

$= x^2 - 9 \\\\= x^2 - 3^2 \\\\ \red{= (x+3)(x-3)} \qquad\bf [Using \ a^2-b^2 = (a+b)(a-b) ]$

<u>Factorising</u><u> </u><u>3x</u><u>³</u><u> </u><u>+</u><u> </u><u>8</u><u>1</u><u> </u>

$= 3x^3 + 81\\\\= 3(x^3+27) \\\\= 3( x^3+27) \\\\ = 3(x^3+3^3) \\\\ \red{= 3 [ (x+3)(x^2+9-3x) ] } \qquad \bf{[ Using \ a^3+b^3=(a+b)(a^2+b^2-ab) ] }$

Hence we can see that (x+3) is common factor in both expressions.

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3 years ago

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enyata [817]

Answer:

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Step-by-step explanation:

355 + 2 hundreds = ?

Well, 2 hundreds = 200

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PLS MARK BRAINLIEST!

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