Simple, first, change 70% into 0.7
thus,
21= 0.7*n
21/0.7=0.7n/0.7
30=n
Thus, your answer, is 30.
Answer:
1/3 of the kids are boys
Step-by-step explanation:
Since there are 9 kids total and 3 boys, 3 out of 9 kids are boys. We can turn this statement into a fraction like so:
3/9
Now we need to simplify. In order to do so, we need to find a number that goes into both the numerator and denominator. Well, 3 goes into 3 one time and 3 goes into 9 three times. Now we can simplify the fraction like this:
1/3
So, 1/3 of the kids are boys.
Hope this helped! Let me know if you have any more questions! :)
Answer:

Step-by-step explanation:
A right angled triangle is given to us and we need to find out the value of x . We may use <u>P</u><u>y</u><u>t</u><u>h</u><u>a</u><u>g</u><u>o</u><u>r</u><u>a</u><u>s</u><u> </u><u>T</u><u>h</u><u>e</u><u>o</u><u>r</u><u>e</u><u>m</u><u> </u>here as ,

Here ,
- perpendicular = 24
- hypotenuse = x
- base = 10
On substituting the respective values , we have ;

Solve the square ,

Add ,

Put squareroot on both the sides ,

Simplify ,

Answer:
vertical angles is the answer
The answer is 2, simplify it by dividing 4 and 2 by 2