The answer is 23
HOPED THIS HELPED :)
Answer: 7
Step-by-step explanation: Cross multiply, so 15 times x and 21 times 5. 21 times 5 is 105 then you divide by 15 which gives you 7.
-3/2 -15/10 this is called a negative number. Negative 1 and 5 tenths
C=2πr r radius it would be right
