He gave away 9 (20 x (3/7) =9) so 21-9=12
So she used

of the cord to make necklaces.

She splits the

length into 4 equal lengths.
To divide a fraction by a fraction, you multiply it by its reciprocal.


She used

of the original chord to make each bracelet.
<span>This is an isosceles triangle. If each side is 1, we can find the hypotenuse using the Pythagorean theorem.
a^2 + b^2 = c^2
1^2 + 1^2 = c^2
1 + 1 = c^2
2 = c^2
root 2 = c
Thus, the answer is root 2.
Hope this helps :)</span>
Answer:
John is 16 and Maya is 11
Step-by-step explanation:
x=Maya's age
x+5=John's age
x+x+5=27
2x+5=27
-5 -5
2x=22
/2 /2
x=11
x+5=
11+5= 16