Answer:
I most likely think it is approximately 19%
Step-by-step explanation:
Assuming you mean still receive an allowance even though they dont do chores: 
Ok In all the total number of students is 21. Out of those 21, 4 still receive an allowance even though they dont do chores. This is 4/21. Now all we have to do is convert 4/21 into a percentage. To do this we have to divide 100 by 21, then times 4 by that number: 
100 / 21 = >> approximately 4.76
Now 4 times 4.76 : 
4 * 4.76 = >>> approximately 19.04 % . We round it to 19%.
So the answer is 19%.
 
        
             
        
        
        
Answer:
<h3><u>Let's</u><u> </u><u>understand the concept</u><u>:</u><u>-</u></h3>
- Here 12 is 90% of a number. 
- So we can say that 90% of That number is 12 .
- In this way we can get the the number 
<h3><u>Solution</u><u>:</u><u>-</u></h3>
Let,
 the number=x
<h3>According to the question ,</h3>


- We know 90%=90/100
- so add it 




- Now use cross multiplication method 








- Answer will come in decimals so we take approximate value.




 The number is 13.
The number is 13.
 
        
             
        
        
        
Answer:
f=15
Step-by-step explanation:
f/6=2.5
f=2.5*6
f=15
 
        
             
        
        
        
Answer:

Step-by-step explanation:
Point Z divides XY into a 5:3 ratio, so Z is 5/3 of the way from X to Y.  That ratio is k, found by writing the numerator of the ratio (5) over the sum of the numerator and the denominator (5 + 3 = 8).  Our k value is 5/8.  Now we will find the rise and run values which is the slope of this line segment:

Coordinates are found in this formula:

Filling that in:

which simplifies to

which gives us the final coordinates of Z to be 
 
        
             
        
        
        
Answer:
743.25m^2
Step-by-step explanation:
Area of triangle = 1/2bh
= 1/2 x 30 x 26 
= 390
Area of semi circle = 1/2 πr^2
= 1/ 2 x 3.14 x 15 x15 
=353.25m^2
= 390 + 353.25
= 743.25m^2