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zhuklara [117]
3 years ago
6

WILL AWARD BRAINLIEST: Two men decide to drive to a distant town, taking the same route. The first leaves 2 hours ahead of the s

econd and drives at 60 km per hour, while the second man drives at 90 km per hour. How many hours will it take the second man to catch up with the first man?
Mathematics
1 answer:
jarptica [38.1K]3 years ago
4 0

Answer:

4

Step-by-step explanation:

First person head start =120

after first hour of second person leaves the first person is at 180 and second is at 90 the 210;180, 270;270 so 3 hours

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Select the decimal that is equivalent to 28/30
bonufazy [111]

The answer is 0.93333333333333.

 

Fraction to Decimal Conversion  

(Math | General | Fraction to Decimal Conversion)

Fraction to Decimal Conversion Tables

Important Note: any span of numbers that is underlined signifies that those numbers are repeated. For example, 0.09 signifies 0.090909....

Only fractions in lowest terms are listed.  For instance, to find 2/8, first simplify it to 1/4 then search for it in the table below.  

 

fraction = decimal      

1/1 = 1      

1/2 = 0.5      

1/3 = 0.3 2/3 = 0.6    

1/4 = 0.25 3/4 = 0.75    

1/5 = 0.2 2/5 = 0.4 3/5 = 0.6 4/5 = 0.8

1/6 = 0.16 5/6 = 0.83    

1/7 =  0.142857 2/7 =  0.285714 3/7 =  0.428571 4/7 =  0.571428

 5/7 =  0.714285 6/7 =  0.857142  

1/8 = 0.125 3/8 = 0.375 5/8 = 0.625 7/8 = 0.875

1/9 = 0.1 2/9 = 0.2 4/9 = 0.4 5/9 = 0.5

 7/9 = 0.7 8/9 = 0.8  

1/10 = 0.1 3/10 = 0.3 7/10 = 0.7 9/10 = 0.9

1/11 = 0.09 2/11 = 0.18 3/11 = 0.27 4/11 = 0.36

 5/11 = 0.45 6/11 = 0.54 7/11 = 0.63

 8/11 = 0.72 9/11 = 0.81 10/11 = 0.90

1/12 = 0.083 5/12 = 0.416 7/12 = 0.583 11/12 = 0.916

1/16 = 0.0625 3/16 = 0.1875  5/16 = 0.3125 7/16 = 0.4375

 11/16 = 0.6875 13/16 = 0.8125 15/16 = 0.9375

1/32 = 0.03125 3/32 = 0.09375 5/32 = 0.15625 7/32 = 0.21875

 9/32 = 0.28125 11/32 = 0.34375 13/32 = 0.40625

 15/32 = 0.46875 17/32 = 0.53125 19/32 = 0.59375

 21/32 = 0.65625 23/32 = 0.71875 25/32 = 0.78125

 27/32 = 0.84375 29/32 = 0.90625 31/32 = 0.96875

Need to convert a repeating decimal to a fraction? Follow these examples:

Note the following pattern for repeating decimals:

0.22222222... = 2/9

0.54545454... = 54/99

0.298298298... = 298/999

Division by 9's causes the repeating pattern.

Note the pattern if zeros precede the repeating decimal:

0.022222222... = 2/90

0.00054545454... = 54/99000

0.00298298298... = 298/99900

Adding zero's to the denominator adds zero's before the repeating decimal.

To convert a decimal that begins with a non-repeating part, such as 0.21456456456456456..., to a fraction, write it as the sum of the non-repeating part and the repeating part.

 0.21 + 0.00456456456456456...

Next, convert each of these decimals to fractions. The first decimal has a divisor of power ten. The second decimal (which repeats) is converted according to the pattern given above.

 21/100 + 456/99900

Now add these fraction by expressing both with a common divisor

 20979/99900 + 456/99900

and add.

 21435/99900

Finally simplify it to lowest terms

 1429/6660

and check on your calculator or with long division.

= 0.2145645645...

3 0
3 years ago
Read 2 more answers
Look at the photo attached for the question, please help asap!
chubhunter [2.5K]

Answer:

<em>y ≥ - 0.8 </em>

Step-by-step explanation:

\sqrt{25y^2 +40y+16} = 5y + 4

\sqrt{(5y+4)^2} = 5y + 4

5y + 4 = 5y + 4 and 5y + 4 ≥ 0 ⇒ y ≥ - 0.8

y ∈ [ - 0.8 , ∞ )

- ( 5y + 4 ) = 5y + 4

10y = - 8

y = - 0.8

The answer is <em>y ≥ - 0.8</em>

7 0
2 years ago
What is the coefficient of the term 13a in the expression 13a+6b? Please Help Fast alot of points
KATRIN_1 [288]

Answer:

13

Step-by-step explanation:

A coefficient is the contestant value (a number) placed before a variable to be multiplied. A coefficient is multiplied by it's neighboring variable. In '13a', 13 is being multiplied by a.

13 will be the coefficient in 13a.

3 0
3 years ago
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