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kolezko [41]
3 years ago
9

The ratio of the side lengths of a quadrilateral are 2:3:5:7. If the quadrilateral's perimeter is 68, what is the length of each

side?
Mathematics
1 answer:
Marina86 [1]3 years ago
5 0
We should find the equivalent ratios of 2:3:5:7 and then add the numbers together to get a sum of 68. A unit rate of two: 4:6:10:14 = 24. A unit rate of three: 6:9:15:21 = 51. A unit rate of four: 8:12:20:28 = 68. Now we know that the length of each side is 8:12:20:28.
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Can't understand this. Can anyone tell me the answer -
slavikrds [6]

Hi,

The first thing you have to remember, that the sum of  all probabilities are equal to 1.

As you have only  4 items  :   Pasta + Fish + Pizza +Salad

So pasta + fish + pizza +salad  =   1  

1 means every client who bought something had something to eat.  

So now it simple :

We know  the probability of every other items, so we will find the probabilty of  salad by substracting  off  1 every other probabilities.  

<u>Remind yourself  to always have data in same shape/ units etc.</u>

Here we have percentage, fraction, numbers.... can be confusing.  

So convert all in same shape.  I 'm going to convert all in numbers, as it seems to me the simpliest.

I will call probability of  salad  "X" as it usually like that we call something unknown in math.

So pasta =  15 % =  15/100  = 0.15

    fish =  0.2

    pizza =  3/10 = 0.3

   salad =  X

So  now  we have  :  

pasta + fish + pizza +salad  =   1  

replace by what I know :

0.15 +0.2+0.3 + X = 1

0.65 + X = 1  

0.65 +X -0.65 = 1 - 0.65

                         X =  0.35

Salad probability is  0.35  , which means  35 % .

8 0
1 year ago
4. A recipe says that 2 3/5 cups of flour are needed to make 1 batch of biscuits. How many cups of flour are needed to make 2 ba
Irina-Kira [14]
The answer is the second option, 5 1/5
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3 years ago
3. Give an example of an expression with a rational exponent and explain how to convert it into radical form.
asambeis [7]
<h2><u>Solution </u><u>-</u><u>:</u><u> </u></h2>

<u>Example </u><u>-</u><u>1</u><u> </u>

<u>Here </u><u>we </u><u>have </u><u>,</u><u>,</u><u>,</u><u> </u>

(6 \: x) { \frac{9}{5} }^{}

<u>solve </u><u>-</u><u>;</u><u> </u>

<u>6</u><u>x</u><u> </u><u>^</u><u>9</u><u>×</u><u>1</u><u>/</u><u>5</u>

<u>\big[(6x \: ) {}^{9} ] {}^{ \frac{1}{5} }</u>

<u>Convert </u><u>on </u><u>radical </u><u>form </u>

<u>\sqrt[5]{(6x) {}^{9} }</u>

<u>Example </u><u>-</u><u>2</u><u> </u>

<u>\displaystyle{}a {}^{ \frac{2}{5} } \\   =  \sqrt[5]{x {}^{2} }  \:   \:  \:  \:  \:  \:  \:  \because ( \sqrt[m]{x {}^{n} } )</u>

<h2>__________________</h2><h3><u>More </u><u>Basic </u><u>Information </u><u>-</u><u>:</u><u> </u></h3>
  • hair in the question 3x is called radicant and five is called the index of radical. and in second question X is radicant of the number and five and two are index of the number.

<u>types </u><u>of </u><u>Radical </u><u>-</u><u>:</u><u> </u>

  • pure radical
  • mixed radical
  • unequal radical
  • equal radical

<u>rationalization </u>

  • the operation of multiplication of a radical with the other radical to get product a rational number is called rationalisation.

<u>other </u><u>name </u>

  • surds
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Miguel's teacher asks him to color 4 8th of his grid he must use 3 colors red blue green there must be more green sections than
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Miguel would have to color one section blue, one section red, and two sections green.

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HELP ME PLEASE !!!!!!!!
vivado [14]

Answer:

I got 70% hope it helps man

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