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3 years ago

When 80% of a number is added to the number, the result is 216.

Mathematics

2 answers:

son4ous [18]3 years ago

5 0

I believe that the answer is 120.

Using this formula:

x+0.8x=216 1.8x=216 x=120

Troyanec [42]3 years ago

3 0

The number you are looking for is 120 and you can easily calculate it by solving the following equation with respect to x
$x+0.8 x = 216$

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2 years ago

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Solve the expression for x: (4 – 2) (x – 2) = 4x – 8 A. x = –2 B. x = 0 C. x = 6/5 D. x = 2

Ratling [72]

Answer:

Option D) x = 2

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For more questions or more information, please comment below!

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3 years ago

Divide the combinations. 60C3 / 15C3

Mariulka [41]

I hope you know what '!' means
2!=2
3!=6
4!=24
basicalkly times every natural number including and before that number

nCr= $\frac{n!}{r!(n-r)!}$
so
$\frac{60C3}{15C3}$ =
$\frac{ \frac{60!}{3!(60-3)!} }{ \frac{15!}{3!(15-3)!} }$ =
$( \frac{60!}{3!(60-3)!})(\frac{3!(15-3)!}{15!})$ =
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$\frac{(60!)(3!)(12!)}{(3!)(57!)(15!)}$ =
$\frac{(60!)(12!)}{(57!)(15!)}$ =
$\frac{(60!)}{(57!)(15)(14)(13)}$ =
$\frac{(60)(59)(58)}{(15)(14)(13)}$ =
$\frac{(30)(59)(58)}{(15)(7)(13)}$ =
$\frac{(6)(59)(58)}{(3)(7)(13)}$ =
$\frac{6844}{91}$

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3 years ago

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victus00 [196]

Answer:

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1 year ago

When 80​% of a number is added to the​ number, the result is 216.

When 80% of a number is added to the number, the result is 216.