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4 years ago

How do i put fractions on the number line?

2 answers:

8 0

You basically just see the denominator, try to convert it into 100. Then create a number line from 1-100. Then use the numerator of the converted fraction and place it on the number line.

alexdok [17]4 years ago

6 0

Lets say you want to find 3/4 on a number line first you split the line into 4 pieces then you mark 0/4 1/4 2/4 3/4 4/4 the third one would be 3/4 I hope this helped you!
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Wally buys 85 peaches for $42. How many can he buy for $134? Set up a proportion to solve.

dybincka [34]

Here's the answer, hope it helped I'm madd late tho

7 0

4 years ago

Suppose on a certain test, fifty students earn a perfect score and fifty students earn a zero. determine the mean grade and stan

kodGreya [7K]

Answer:

Mean=50.

standard deviation=50.

Step-by-step explanation:

Let the perfect score be 100.

The mean(average) of a data is given by: $Mean=\frac{sum of data points}{number of data points}$

Here the number of data points are 100. out of which 50 attains a value 100,and 50 attains value 0.

so, sum of data points=50×100+50×0=5000.

$Mean=\frac{5000}{100}$

Mean=50.

"Now the standard deviation of data points are calculated by firstly subtracting mean from every entry and then square the number and take it as new entry and calculate the mean of the new data entry and lastly taking the square root of this new mean".

Here if 50 is subtracted from each entry the new entry will have 50 entries as '50' and 50 entries as '-50'.

next on squaring we will have all the 100 entries as '2500'.

now the mean of these entries is: $\frac{2500\times100}{100}$

=2500

taking it's squareroot we have $\sqrt{2500}=50$

Hence, standard deviation=50.

5 0

4 years ago

Read 2 more answers

Only need help on number 5 and 6

Alborosie

5) since (x-a)^2+(y-b)^2=r^2

plug in (-5,2) as (a,b) and r=3

Making the equation:

(x+5)^2+(y-2)^2=9

6) (x-0)^2+(y-0)^2=r^2

since we have (0,5)

0^2+5^2=r^2

Final equation: x^2+y^2=25

5 0

3 years ago

Maya's chocolate bar is 29% cocoa. If the weight of the chocolate bar is 67 grams, how many grams of cocoa does it contain? Roun

nika2105 [10]

Answer:

Step-by-step explanation:

x/67=29/100

29x67=1943

1943/100=

19.43

Round:

8 0

2 years ago

The radius of a quarter circle is 3 what is the quarter circle's perimeter?

slava [35]

Answer:

21.42

Step-by-step explanation:

Imagine it as a full circle. 3 x 4 will give you the diameter of a full circle, which is 12. circumference = pi x diameter. so 12 pi (we can work that out later). now for the quater circle, divide it by 4, so 3 pi. Then you have the 2 extra edges which are both 2r, so 6 each. finally, you have 3 pi plus 12 which = 21.42

6 0

2 years ago