The answer to this rather easy question is 69.
Answer:
a = 
Step-by-step explanation:
4a -16 = a - 15
both left and right -a
then
4a - 16 -a = a - 15 -a
then
4a -a -16 = a -a -15
then
3a -16 = -15
both left and right + 16
then
3a -16 + 16 = -15 + 16
then
3a = 1
both left and right ÷3
then
3a ÷ 3 =1 ÷ 3
then
a = 
Answer:
25
Step-by-step explanation:
25 has 2 digits
25 is less than 30
25 is odd
2+5 = 7
It is 25.
1= 2.89
12= 28.56
so, 28.56/2.89= 9.88 so per each container saved by buying oil is 9.88 dollars
Answer:
18.3mm
Step-by-step explanation:
using pythagoras
AC = 
AC = 18.3 mm